Skip to Content

Changes for page 10 Constraints

Last modified by Helena K. on 2026/06/10 09:45
From version 8.1
edited by Helena K.
on 2026/06/09 20:14
Change comment: There is no comment for this version
To version 8.4
edited by Helena K.
on 2026/06/10 09:34
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -31,13 +31,14 @@
31 31  
32 32  A [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] is a property of a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]; its purpose is to explicitly list the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] from the corresponding [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] that are being used by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. 
33 33  
34 -[[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] were introduced in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 and are not required for most [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] where the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] must always contain the full complement of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] as defined by the corresponding [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]. However, for some complex data collections, which may span long periods and where the full complement of required [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] are not necessarily known at design time, the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] is subject to increasing its Dimensionality over time.  In this scenario it is possible to define the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] as an evolving structure, this property tells the user that the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] can have new [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] added without having to undergo a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change; a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] at [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 1.0.0 for example would be able to add a new [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] and move to [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 1.1.0; a change that would not ordinarily be allowed.  A minor [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change on the addition of a new [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] is only possible if the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] defines itself as an evolving structure.   This is a new property of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] introduced in [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 3.1 to satisfy this use case.  The evolving structure  property is either true or false, defaulting to false if not specified.  Setting the evolving structure property to true requires a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change, and therefore can only be introduced on an x.0.0 release (e.g. 1.0.0).  The evolving structure property can be set to false to indicate that there will be no additional [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] added to the Data Structure under the same major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] number; setting the evolving structure property to false does not require require a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change on the Data Structure.   
35 35  
35 +[[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] were introduced in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 and are not required for most [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] where the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] must always contain the full complement of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] as defined by the  corresponding [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]. However, for some complex data collections, which may span long periods and where the full complement of required [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] are not necessarily known at design time, the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] is subject to increasing its Dimensionality over time.  In this scenario it is possible to define the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] as an evolving structure, this property tells the user that the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] can have new [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] added without having to undergo a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change; a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] at [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 1.0.0 for example would be able to add a new [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] and move to [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 1.1.0; a change that would not ordinarily be allowed.  A minor [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change on the addition of a new [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] is only possible if the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] defines itself as an evolving structure.   This is a new property of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] introduced in [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 3.1 to satisfy this use case.  The evolving structure  property is either true or false, defaulting to false if not specified.  Setting the evolving structure property to true requires a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change, and therefore can only be introduced on an x.0.0 release (e.g. 1.0.0).  The evolving structure property can be set to false to indicate that there will be no additional [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] added to the Data Structure under the same major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] number; setting the evolving structure property to false does not require require a major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change on the Data Structure.   
36 +
36 36  When a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] references a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], late binding on the minor release, and the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] has the evolving structure property set to true, then the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] must contain a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] to protect its Dimensionality from changing over time without a [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] change. 
37 37  
38 38  The [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] provides the explicit list of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] that the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] uses from the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] that it references.  This enables the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] to evolve over time without breaking the compatibility of [[datasets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] against the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. 
39 39  
40 -__**Rules for a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]**__
41 +__**Rules for a Dimension Constraint**__
41 41  
42 42  * A [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] must contain a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] if the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] which it uses states that it is an evolving structure and the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] is late binding on the minor release (latest minor release of a given major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]], e.g. 1.0+.0)
43 43  * The [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] can only include [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] from the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] that is referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]].
... ... @@ -46,7 +46,7 @@
46 46  * When exporting data for the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]], the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] should only include the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] specified by the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
47 47  * When exporting data for the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] must contain the full set of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] as specified by the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]. The tilde ‘’ character is used to represent a value which is not present due to the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] not being included in the corresponding [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]].
48 48  
49 -__**Example [[Datasets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] with Evolving Structures**__
50 +__**Example Datasets with Evolving Structures**__
50 50  
51 51  A [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] is built against a [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].  The [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] contains data for two [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]].  [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] ‘DF_POP’ uses a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] which fixes its [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to  FREQ and REF_AREA.  [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] ‘DF_POP_SA’ does not reference a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], and as such includes all [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] as specified by the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].  
52 52  
... ... @@ -53,7 +53,7 @@
53 53  The resulting [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] contains values ‘’ for both the [[SEX>>doc:sdmx:Glossary 2\.1.Sex.WebHome]] and [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] for the [[series>>doc:sdmx:Glossary 2\.1.Series.WebHome]] related to DF_POP.
54 54  
55 55  (% style="width:758.294px" %)
56 -|(% style="width:119px" %)**[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]**|(% colspan="7" style="width:635px" %)**FREQ REF_AREA [[SEX>>doc:sdmx:Glossary 2\.1.Sex.WebHome]] [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] OBS_VALUE TIME_PERIOD [[UNIT>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]]**
57 +|(% style="width:119px" %)**Dataflow**|(% colspan="7" style="width:635px" %)**FREQ REF_AREA SEX AGE OBS_VALUE TIME_PERIOD UNIT**
57 57  |(% style="width:119px" %)**DF_POP**|(% style="width:55px" %)A|(% style="width:103px" %)UK|(% style="width:79px" %) |(% style="width:92px" %) |(% style="width:93px" %)65|(% style="width:111px" %)2022|(% style="width:101px" %)6
58 58  |(% style="width:119px" %)**DF_POP**|(% style="width:55px" %)A|(% style="width:103px" %)FR|(% style="width:79px" %) |(% style="width:92px" %) |(% style="width:93px" %)50|(% style="width:111px" %)2022|(% style="width:101px" %)6
59 59  |(% style="width:119px" %)**DF_POP_SA**|(% style="width:55px" %)A|(% style="width:103px" %)UK|(% style="width:79px" %)M|(% style="width:92px" %)1|(% style="width:93px" %)1.2|(% style="width:111px" %)2022|(% style="width:101px" %)6
... ... @@ -157,71 +157,71 @@
157 157  
158 158  Example:
159 159  
160 -Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] 1.0.0
161 +Data Constraint 1.0.0
161 161  
162 162  (% style="width:573.294px" %)
163 -|(% style="width:108px" %)[[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]|(% style="width:127px" %)Valid Value|(% style="width:150px" %)Valid from|(% style="width:185px" %)Valid to
164 +|(% style="width:108px" %)Component|(% style="width:127px" %)Valid Value|(% style="width:150px" %)Valid from|(% style="width:185px" %)Valid to
164 164  |(% rowspan="3" style="width:108px" %)COUNTRY|(% style="width:127px" %)UK|(% style="width:150px" %) |(% style="width:185px" %)
165 165  |(% style="width:127px" %)FR|(% style="width:150px" %) |(% style="width:185px" %)
166 166  |(% style="width:127px" %)DE|(% style="width:150px" %) |(% style="width:185px" %)
167 167  
168 -Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] 1.1.0
169 +Data Constraint 1.1.0
169 169  
170 170  (% style="width:576.294px" %)
171 -|(% style="width:110px" %)[[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]|(% style="width:129px" %)Valid Value|(% style="width:145px" %)Valid from|(% style="width:189px" %)Valid to
172 +|(% style="width:110px" %)Component|(% style="width:129px" %)Valid Value|(% style="width:145px" %)Valid from|(% style="width:189px" %)Valid to
172 172  |(% rowspan="3" style="width:110px" %)COUNTRY|(% style="width:129px" %)UK|(% style="width:145px" %) |(% style="width:189px" %)
173 173  |(% style="width:129px" %)FR|(% style="width:145px" %) |(% style="width:189px" %)2012
174 174  |(% style="width:129px" %)DE|(% style="width:145px" %) |(% style="width:189px" %)
175 175  
176 -When both [[versions>>doc:sdmx:Glossary 2\.1.Version.WebHome]] of the Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] are in a system, an [[observation value>>doc:sdmx:Glossary 2\.1.Observation value.WebHome]] reported against COUNTRY FR for [[time period>>doc:sdmx:Glossary 2\.1.Time period.WebHome]] 2013 would be deemed invalid as the 1.1.0 rule would be applied.
177 +When both (% style="color:#e74c3c" %)versions(%%) of the Data (% style="color:#e74c3c" %)Constraint(%%) are in a system, an [[observation value>>doc:sdmx:Glossary 2\.1.Observation value.WebHome]] reported against COUNTRY FR for [[time period>>doc:sdmx:Glossary 2\.1.Time period.WebHome]] 2013 would be deemed invalid as the 1.1.0 rule would be applied.
177 177  
178 178  === 10.4.6 Inheritance ===
179 179  
180 180  ==== 10.4.6.1 Attachment levels of a Constraint ====
181 181  
182 -There are three [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]] of [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] attachment for which these inheritance rules apply:
183 +There are three (% style="color:#e74c3c" %)levels(%%) of (% style="color:#e74c3c" %)constraint(%%) attachment for which these inheritance rules apply:
183 183  
184 -* [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]/[[MSD>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]] – top [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]]
185 -** [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/[[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] – second [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]]
186 -*** [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] – third [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]]
185 +* [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]/[[MSD>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]] – top (% style="color:#e74c3c" %)level
186 +** [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/[[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] – second (% style="color:#e74c3c" %)level
187 +*** [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] – third (% style="color:#e74c3c" %)level
187 187  
188 -It is not necessary for a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] to be attached to a higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]]. e.g., it is valid to have a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] for a [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] where there are no [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] attached the relevant [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] or [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
189 +It is not necessary for a (% style="color:#e74c3c" %)Constraint(%%) to be attached to a higher (% style="color:#e74c3c" %)level(%%) [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]]. e.g., it is valid to have a (% style="color:#e74c3c" %)Constraint(%%) for a [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] where there are no (% style="color:#e74c3c" %)constraints(%%) attached the relevant [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] or [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
189 189  
190 190  ==== 10.4.6.2 Cascade rules for processing Constraints ====
191 191  
192 -The processing of the [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on either [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/[[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] must take into account the [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] declared at higher [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]]. The rules for the lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] (attached to [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/ [[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] and [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]]) are detailed below.
193 +The processing of the (% style="color:#e74c3c" %)constraints(%%) on either [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/[[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] must take into account the (% style="color:#e74c3c" %)constraints(%%) declared at higher (% style="color:#e74c3c" %)levels(%%). The rules for the lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)constraints(%%) (attached to [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]/ [[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] and [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]]) are detailed below.
193 193  
194 -Note that there can be a situation where a [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] is specified at a lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] before a [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] is specified at a higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]]. Therefore, it is possible that a higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] makes a lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] invalid. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] makes no rules on how such a conflict should be handled when processing the [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] for attachment. However, the cascade rules on evaluating [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] for usage are clear – the higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] takes precedence in any conflicts that result in a less restrictive specification at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]].
195 +Note that there can be a situation where a (% style="color:#e74c3c" %)constraint(%%) is specified at a lower (% style="color:#e74c3c" %)level(%%) before a (% style="color:#e74c3c" %)constraint(%%) is specified at a higher (% style="color:#e74c3c" %)level(%%). Therefore, it is possible that a higher-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)constraint(%%) makes a lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)constraint(%%) invalid. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] makes no rules on how such a conflict should be handled when processing the (% style="color:#e74c3c" %)constraint(%%) for attachment. However, the cascade rules on evaluating (% style="color:#e74c3c" %)constraints(%%) for usage are clear – the higher-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)constraint(%%) takes precedence in any conflicts that result in a less restrictive specification at the lower (% style="color:#e74c3c" %)level(%%).
195 195  
196 196  ==== 10.4.6.3 Cube Region ====
197 197  
198 -It is not necessary to have a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on the higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] (e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]), but if there is such a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]](s) then:
199 +It is not necessary to have a (% style="color:#e74c3c" %)Constraint(%%) on the higher-(% style="color:#e74c3c" %)level(%%) [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] (e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]), but if there is such a (% style="color:#e74c3c" %)Constraint(%%) at the higher (% style="color:#e74c3c" %)level(%%)(s) then:
199 199  
200 -* The lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] cannot be less restrictive than the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified for the same [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] (e.g. [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]) at the next higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]], which constrains that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]]. For example, if the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] FREQ is constrained to A, Q in a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], then the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] cannot be A, Q, M or even just M – it can only further constrain A, Q.
201 -* The [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] for any one [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] further constrains the content for the same [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]](s).
202 -* Any [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]], which is not referenced in a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], is deemed to be constrained according to the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified at the next higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] which [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]].
203 -* If there is a conflict when resolving the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] in terms of a lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] being less restrictive than a higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], then the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] is used.
201 +* The lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%) cannot be less restrictive than the (% style="color:#e74c3c" %)Constraint(%%) specified for the same [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] (e.g. [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]) at the next higher (% style="color:#e74c3c" %)level(%%), which constrains that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]]. For example, if the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] FREQ is constrained to A, Q in a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], then the (% style="color:#e74c3c" %)Constraint(%%) at the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] cannot be A, Q, M or even just M – it can only further constrain A, Q.
202 +* The (% style="color:#e74c3c" %)Constraint(%%) at the lower (% style="color:#e74c3c" %)level(%%) for any one [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] further constrains the content for the same [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] at the higher (% style="color:#e74c3c" %)level(%%)(s).
203 +* Any [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]], which is not referenced in a (% style="color:#e74c3c" %)Constraint(%%), is deemed to be constrained according to the (% style="color:#e74c3c" %)Constraint(%%) specified at the next higher (% style="color:#e74c3c" %)level(%%) which (% style="color:#e74c3c" %)constraints(%%) that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]].
204 +* If there is a conflict when resolving the (% style="color:#e74c3c" %)Constraint(%%) in terms of a lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%) being less restrictive than a higher-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%), then the (% style="color:#e74c3c" %)Constraint(%%) at the higher-(% style="color:#e74c3c" %)level(%%) is used.
204 204  
205 -Note that it is possible for a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at a higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] to constrain, say, four [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] in a single [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], and a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at a lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] to constrain the same four in two, three, or four [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
206 +Note that it is possible for a (% style="color:#e74c3c" %)Constraint(%%) at a higher (% style="color:#e74c3c" %)level(%%) to constrain, say, four [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] in a single (% style="color:#e74c3c" %)Constraint(%%), and a (% style="color:#e74c3c" %)Constraint(%%) at a lower (% style="color:#e74c3c" %)level(%%) to constrain the same four in two, three, or four (% style="color:#e74c3c" %)Constraints(%%).
206 206  
207 207  ==== 10.4.6.4 Key Set ====
208 208  
209 -It is not necessary to have a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on the higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] (e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]), but if there is such a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]](s) then:
210 +It is not necessary to have a (% style="color:#e74c3c" %)Constraint(%%) on the higher-(% style="color:#e74c3c" %)level(%%) [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] (e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]), but if there is such a (% style="color:#e74c3c" %)Constraint(%%) at the higher (% style="color:#e74c3c" %)level(%%)(s) then:
210 210  
211 -* The lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] cannot be less restrictive than the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]].
212 -* The [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] for any one [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] further constrains the keys specified at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]](s).
213 -* Any [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]], which is not referenced in a [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], is deemed to be constrained according to the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified at the next higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] which [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]].
214 -* If there is a conflict when resolving the keys in the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] at two [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]], in terms of a lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] being less restrictive than a higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], then the offending keys specified at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] are not deemed part of the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
212 +* The lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%) cannot be less restrictive than the (% style="color:#e74c3c" %)Constraint(%%) specified at the higher (% style="color:#e74c3c" %)level(%%).
213 +* The (% style="color:#e74c3c" %)Constraint(%%) at the lower (% style="color:#e74c3c" %)level(%%) for any one [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]] further constrains the keys specified at the higher (% style="color:#e74c3c" %)level(%%)(s).
214 +* Any [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]], which is not referenced in a (% style="color:#e74c3c" %)Constraint(%%), is deemed to be constrained according to the (% style="color:#e74c3c" %)Constraint(%%) specified at the next higher (% style="color:#e74c3c" %)level(%%) which (% style="color:#e74c3c" %)constraints(%%) that [[Member Selection>>doc:sdmx:Glossary 2\.1.Member selection.WebHome]].
215 +* If there is a conflict when resolving the keys in the (% style="color:#e74c3c" %)Constraint(%%) at two (% style="color:#e74c3c" %)levels(%%), in terms of a lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)constraint(%%) being less restrictive than a higher-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%), then the offending keys specified at the lower (% style="color:#e74c3c" %)level(%%) are not deemed part of the (% style="color:#e74c3c" %)Constraint(%%).
215 215  
216 -Note that a Key in a Key Set can have wildcarded [[Components>>doc:sdmx:Glossary 2\.1.Component.WebHome]]. For instance, the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] may simply constrain the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] FREQ to "A", and all keys where the FREQ="A" are therefore valid.
217 +Note that a Key in a Key Set can have wildcarded [[Components>>doc:sdmx:Glossary 2\.1.Component.WebHome]]. For instance, the (% style="color:#e74c3c" %)Constraint(%%) may simply constrain the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] FREQ to "A", and all keys where the FREQ="A" are therefore valid.
217 217  
218 218  The following logic explains how the inheritance mechanism works. Note that this is conceptual logic and actual systems may differ in the way this is implemented.
219 219  
220 -1. Determine all possible keys that are valid at the higher [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]].
221 -1. These keys are deemed to be inherited by the lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] constrained object, subject to the [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]].
222 -1. Determine all possible keys that are possible using the [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] specified at the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]].
223 -1. At the lower [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] inherit all keys that match with the higher-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
224 -1. If there are keys in the lower-[[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] that are not inherited then the key is invalid (i.e., it is less restrictive).
221 +1. Determine all possible keys that are valid at the higher (% style="color:#e74c3c" %)level(%%).
222 +1. These keys are deemed to be inherited by the lower-(% style="color:#e74c3c" %)level(%%) constrained object, subject to the (% style="color:#e74c3c" %)Constraints(%%) specified at the lower (% style="color:#e74c3c" %)level(%%).
223 +1. Determine all possible keys that are possible using the (% style="color:#e74c3c" %)Constraints(%%) specified at the lower (% style="color:#e74c3c" %)level(%%).
224 +1. At the lower (% style="color:#e74c3c" %)level(%%) inherit all keys that match with the higher-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%).
225 +1. If there are keys in the lower-(% style="color:#e74c3c" %)level(%%) (% style="color:#e74c3c" %)Constraint(%%) that are not inherited then the key is invalid (i.e., it is less restrictive).
225 225  
226 226  === 10.4.7 Constraints Examples ===
227 227  
... ... @@ -236,17 +236,17 @@
236 236  * [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] – [[Age>>doc:sdmx:Glossary 2\.1.Age.WebHome]]
237 237  * CAS – Current Activity Status
238 238  
239 -In the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], common [[code lists>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] are used and the requirement is to restrict these at various [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]] to specify the actual [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that are valid for the object to which the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] is attached.
240 +In the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], common [[code lists>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] are used and the requirement is to restrict these at various (% style="color:#e74c3c" %)levels(%%) to specify the actual [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that are valid for the object to which the (% style="color:#e74c3c" %)Constraint(%%) is attached.
240 240  
241 241  [[image:1750065279010-260.png]]
242 242  
243 -**Figure 20: Example Scenario for [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] **
244 +**Figure 20: Example Scenario for (% style="color:#e74c3c" %)Constraints(%%) **
244 244  
245 -[[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] are declared as follows:
246 +(% style="color:#e74c3c" %)Constraints(%%) are declared as follows:
246 246  
247 247  [[image:1750065319060-899.png]]
248 248  
249 -**Figure 21: Example [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]**
250 +**Figure 21: Example (% style="color:#e74c3c" %)Constraints(%%)**
250 250  
251 251  Notes:
252 252  
... ... @@ -253,7 +253,7 @@
253 253  
254 254  [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] is constrained for the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and is further restricted for the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE1.
255 255  
256 -* The same [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] applies to both [[Provision Agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]].
257 +* The same (% style="color:#e74c3c" %)Constraint(%%) applies to both [[Provision Agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]].
257 257  
258 258  The cascade rules elaborated above result as follows:
259 259  
... ... @@ -263,40 +263,40 @@
263 263  
264 264  [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE1
265 265  
266 -* Constrained by restricting the [[code list>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] for the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] 002 and 003 (note that this is a more restrictive [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] than that declared for the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] which specifies all [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] except [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] 001).
267 +* Constrained by restricting the [[code list>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] for the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] 002 and 003 (note that this is a more restrictive (% style="color:#e74c3c" %)constraint(%%) than that declared for the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] which specifies all [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] except [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] 001).
267 267  ** Restricts the CAS [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] to 003 and 004.
268 268  
269 269  [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE2
270 270  
271 271  * Restricts the [[code list>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] for the CAS [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] TOT and NAP.
272 -** Inherits the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] applied at the [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
273 +** Inherits the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] (% style="color:#e74c3c" %)constraint(%%) applied at the (% style="color:#e74c3c" %)level(%%) of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
273 273  
274 274  [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] CENSUS_CUBE1_IT
275 275  
276 276  * Restricts the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] for the GEO [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to IT and its children.
277 -** Inherits the [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] from [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE1 for the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] and CAS [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]].
278 +** Inherits the (% style="color:#e74c3c" %)constraints(%%) from [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE1 for the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] and CAS [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]].
278 278  
279 279  [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] CENSUS_CUBE2_IT
280 280  
281 281  * Restricts the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] for the GEO [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to IT and its children.
282 -** Inherits the [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] from [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE2 for the CAS [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]].
283 -** Inherits the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] applied at the [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
283 +** Inherits the (% style="color:#e74c3c" %)constraints(%%) from [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] CENSUS_CUBE2 for the CAS [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]].
284 +** Inherits the [[AGE>>doc:sdmx:Glossary 2\.1.Age.WebHome]] (% style="color:#e74c3c" %)constraint(%%) applied at the (% style="color:#e74c3c" %)level(%%) of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
284 284  
285 -The [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] are defined as follows:
286 +The (% style="color:#e74c3c" %)Constraints(%%) are defined as follows:
286 286  
287 -[[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
288 +[[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] (% style="color:#e74c3c" %)Constraint
288 288  
289 289  [[image:1750065367824-357.png]]
290 290  
291 -[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
292 +[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] (% style="color:#e74c3c" %)Constraints
292 292  
293 293  [[image:1750065392163-400.png]]
294 294  
295 -[[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
296 +[[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] (% style="color:#e74c3c" %)Constraint
296 296  
297 297  [[image:1750065461589-995.png]]
298 298  
299 -**10.4.7.2 Combination of [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]**
300 +**10.4.7.2 Combination of (% style="color:#e74c3c" %)Constraints(%%)**
300 300  
301 301  The possible combination of constraining terms are explained in this section, following a few examples.
302 302  
... ... @@ -311,13 +311,13 @@
311 311  |(% style="width:204px" %)(% style="color:#16a085" %)[[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]|(% style="width:252px" %)(% style="color:#16a085" %)OBS_STATUS
312 312  |(% style="width:204px" %)(% style="color:#16a085" %)[[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]|(% style="width:252px" %)(% style="color:#16a085" %)[[UNIT>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]]
313 313  |(% style="width:204px" %)(% style="color:#16a085" %)[[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]|(% style="width:252px" %)(% style="color:#16a085" %)[[COMMENT>>doc:sdmx:Glossary 2\.1.Comment.WebHome]]
314 -|(% style="width:204px" %)(% style="color:#f39c12" %)MetadataAttribute|(% style="width:252px" %)[[CONTACT>>doc:sdmx:Glossary 2\.1.Contact.WebHome]]
315 +|(% style="width:204px" %)(% style="color:#f39c12" %)MetadataAttribute|(% style="width:252px" %)(% style="color:#e74c3c" %)CONTACT
315 315  |(% style="width:204px" %)[[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]|(% style="width:252px" %)MULTISELECT
316 316  |(% style="width:204px" %)[[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]|(% style="width:252px" %)CHOICE
317 317  
318 318  On the above, let’s assume the following use cases with their constraining requirements:
319 319  
320 -**Use Case 1: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]**
321 +**Use Case 1: A (% style="color:#e74c3c" %)Constraint(%%) on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]**
321 321  
322 322  R1: Allow monthly and quarterly data
323 323  
... ... @@ -329,7 +329,7 @@
329 329  |(% style="width:131px" %)(% style="color:#3498db" %)FREQ|(% style="width:153px" %)(% style="color:#3498db" %)M, Q
330 330  |(% style="width:131px" %)(% style="color:#3498db" %)VIS_CTY|(% style="width:153px" %)(% style="color:#3498db" %)MX
331 331  
332 -**Use Case 2: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed combinations for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]**
333 +**Use Case 2: A (% style="color:#e74c3c" %)Constraint(%%) on allowed combinations for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]**
333 333  
334 334  R1: Allow monthly data for Germany
335 335  
... ... @@ -343,7 +343,7 @@
343 343  |(% rowspan="2" style="width:105px" %)(% style="color:#2980b9" %)Key2|(% style="width:137px" %)(% style="color:#2980b9" %)FREQ|(% style="width:143px" %)(% style="color:#2980b9" %)Q
344 344  |(% style="width:137px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:143px" %)(% style="color:#2980b9" %)MX
345 345  
346 -**Use Case 3: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed values for some [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]** R1: Allow monthly and quarterly data
347 +**Use Case 3: A (% style="color:#e74c3c" %)Constraint(%%) on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed values for some [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]** R1: Allow monthly and quarterly data
347 347  
348 348  R2: Allow Mexico for vis-à-vis country
349 349  
... ... @@ -356,7 +356,7 @@
356 356  |(% style="width:143px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:139px" %)(% style="color:#2980b9" %)MX
357 357  |(% style="width:143px" %)(% style="color:#27ae60" %)OBS_STATUS|(% style="width:139px" %)(% style="color:#27ae60" %)A
358 358  
359 -**Use Case 4: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed combinations for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with specific [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] values**
360 +**Use Case 4: A (% style="color:#e74c3c" %)Constraint(%%) on allowed combinations for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with specific [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] values**
360 360  
361 361  R1: Allow monthly data, for Germany, with [[unit>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]] euro
362 362  
... ... @@ -372,7 +372,7 @@
372 372  |(% style="width:153px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:142px" %)(% style="color:#2980b9" %)MX
373 373  |(% style="width:153px" %)(% style="color:#27ae60" %)[[UNIT>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]]|(% style="width:142px" %)(% style="color:#27ae60" %)USD
374 374  
375 -**Use Case 5: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] together with some combination of [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] values**
376 +**Use Case 5: A (% style="color:#e74c3c" %)Constraint(%%) on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] together with some combination of [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] values**
376 376  
377 377  R1: For annually and quarterly data, for Mexico and Germany, only A status is allowed
378 378  
... ... @@ -388,9 +388,9 @@
388 388  |(% style="width:137px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:183px" %)(% style="color:#2980b9" %)MX, DE
389 389  |(% style="width:137px" %)(% style="color:#27ae60" %)OBS_STATUS|(% style="width:183px" %)(% style="color:#27ae60" %)F
390 390  
391 -The problem with this approach is that according to the business rule for [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], only one should be specified per [[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]. Thus, if a software would perform some conflict resolution would end up with empty sets for FREQ and OBS_STATUS (as they do not share any values).
392 +The problem with this approach is that according to the business rule for (% style="color:#e74c3c" %)Constraints(%%), only one should be specified per [[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]. Thus, if a software would perform some conflict resolution would end up with empty sets for FREQ and OBS_STATUS (as they do not share any values).
392 392  
393 -Nevertheless, there is a much easier approach to that; this is the cascading mechanism of [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] (as shown in 10.4.7.1). Hence, these rules would be expressed into two [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]] of [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]:
394 +Nevertheless, there is a much easier approach to that; this is the cascading mechanism of (% style="color:#e74c3c" %)Constraints(%%) (as shown in 10.4.7.1). Hence, these rules would be expressed into two (% style="color:#e74c3c" %)levels(%%) of (% style="color:#e74c3c" %)Constraints(%%), e.g., [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]:
394 394  
395 395  [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] CubeRegion:
396 396  
... ... @@ -413,7 +413,7 @@
413 413  |(% style="width:159px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:126px" %)(% style="color:#2980b9" %)MX, DE
414 414  |(% style="width:159px" %)(% style="color:#27ae60" %)OBS_STATUS|(% style="width:126px" %)(% style="color:#27ae60" %)A
415 415  
416 -**Use case 6: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed values for [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]**
417 +**Use case 6: A (% style="color:#e74c3c" %)Constraint(%%) on allowed values for some [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed values for [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]**
417 417  
418 418  R1: Allow monthly data, for Germany, with [[unit>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]] euro, and [[measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] choice is  'A' R2: Allow quarterly data, for Mexico, with [[unit>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]] usd, and [[measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] choice is  'B'
419 419  
... ... @@ -429,9 +429,9 @@
429 429  |(% style="width:153px" %)(% style="color:#27ae60" %)[[UNIT>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]]|(% style="width:149px" %)(% style="color:#27ae60" %)USD
430 430  |(% style="width:153px" %)CHOICE|(% style="width:149px" %)B
431 431  
432 -**Use Case 7: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] with wildcards for [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] and removePrefix property**
433 +**Use Case 7: A (% style="color:#e74c3c" %)Constraint(%%) with wildcards for [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] and removePrefix property**
433 433  
434 -For this example, we assume that the VIS_CTY [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] has been prefixed with prefix ‘AREA_’. In this [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], we need to remove the prefix.
435 +For this example, we assume that the VIS_CTY [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] has been prefixed with prefix ‘AREA_’. In this (% style="color:#e74c3c" %)Constraint(%%), we need to remove the prefix.
435 435  
436 436  R1: Allow monthly and quarterly data
437 437  
... ... @@ -445,7 +445,7 @@
445 445  |(% style="width:264px" %)(% style="color:#2980b9" %)FREQ|(% style="width:112px" %)(% style="color:#2980b9" %)M, Q
446 446  |(% style="width:264px" %)(% style="color:#2980b9" %)VIS_CTY (removePrefix=’AREA_’)|(% style="width:112px" %)(% style="color:#2980b9" %)M%
447 447  
448 -**Use Case 8: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] with multilingual support on [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]**
449 +**Use Case 8: A (% style="color:#e74c3c" %)Constraint(%%) with multilingual support on [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]**
449 449  
450 450  R1: Allow monthly and quarterly data
451 451  
... ... @@ -460,11 +460,11 @@
460 460  |(% style="width:190px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:189px" %)(% style="color:#2980b9" %)MX
461 461  |(% style="width:190px" %)(% style="color:#27ae60" %)[[COMMENT>>doc:sdmx:Glossary 2\.1.Comment.WebHome]] (lang=’en’)|(% style="width:189px" %)(% style="color:#27ae60" %)%adjusted%
462 462  
463 -**Use Case 9: A [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on allowed values for [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed** values for Metadata [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] R1: Allow monthly and quarterly data
464 +**Use Case 9: A (% style="color:#e74c3c" %)Constraint(%%) on allowed values for [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] combined with allowed** values for Metadata [[Attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] R1: Allow monthly and quarterly data
464 464  
465 465  R2: Allow Mexico for vis-à-vis country
466 466  
467 -R3: Allow John Doe for [[contact>>doc:sdmx:Glossary 2\.1.Contact.WebHome]]
468 +R3: Allow John Doe for (% style="color:#e74c3c" %)contact(%%)
468 468  
469 469  This may be expressed with the following CubeRegion:
470 470  
... ... @@ -471,4 +471,4 @@
471 471  (% style="width:388.294px" %)
472 472  |(% style="width:181px" %)(% style="color:#2980b9" %)FREQ|(% style="width:204px" %)(% style="color:#2980b9" %)M, Q
473 473  |(% style="width:181px" %)(% style="color:#2980b9" %)VIS_CTY|(% style="width:204px" %)(% style="color:#2980b9" %)MX
474 -|(% style="width:181px" %)(% style="color:#f39c12" %)[[CONTACT>>doc:sdmx:Glossary 2\.1.Contact.WebHome]]|(% style="width:204px" %)(% style="color:#f39c12" %)John Doe
475 +|(% style="width:181px" %)(% style="color: rgb(243, 156, 18); color: rgb(231, 76, 60)" %)CONTACT|(% style="width:204px" %)(% style="color:#f39c12" %)John Doe
© Semantic R&D Group, 2026