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Changes for page 10 Constraints

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edited by Helena
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To version 15.2
edited by Helena
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4 4  
5 5  == 10.1 Introduction ==
6 6  
7 -A Constraint is a Maintainable Artefact that can be associated to one or more of:
7 +A (% style="color:#2ecc71" %)Constraint(%%) is a [[Maintainable Artefact>>doc:xwiki:Glossary.Maintainable artefact.WebHome]] that can be associated to one or more of:
8 8  
9 9  * Data Structure Definition
10 10  * Metadata Structure Definition
11 -* Dataflow
12 -* Metadataflow
13 -* Provision Agreement
14 -* Metadata Provision Agreement
15 -* Data Provider or Metadata Provider (this is restricted to a Release Calendar Constraint)
11 +* [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]
12 +* [[Metadataflow>>doc:xwiki:Glossary.Metadataflow.WebHome]]
13 +* [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]]
14 +* Metadata [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]]
15 +* [[Data Provider>>doc:xwiki:Glossary.Data provider.WebHome]] or Metadata Provider (this is restricted to a [[Release Calendar>>doc:xwiki:Glossary.Release policy - release calendar.WebHome]] (% style="color:#2ecc71" %)Constraint(%%))
16 16  * Simple or Queryable Data Sources
17 17  * Dataset
18 18  * Metadataset
19 19  
20 -Note that regardless of the Artefact to which the Constraint is associated, it is constraining the contents of code lists in the DSD to which the constrained object is related. This does not apply, of course, to a Metadata/Data Provider as the latter can be associated, via the (Metadata) Provision Agreement, to many MSDs/DSDs. Hence the reason for the restriction on the type of Constraint that can be attached to a Metadata/Data Provider.
20 +Note that regardless of the [[Artefact>>doc:xwiki:Glossary.Artefact.WebHome]] to which the (% style="color:#2ecc71" %)Constraint(%%) is associated, it is constraining the contents of [[code lists>>doc:xwiki:Glossary.Code list.WebHome]] in the [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] to which the constrained object is related. This does not apply, of course, to a Metadata/[[Data Provider>>doc:xwiki:Glossary.Data provider.WebHome]] as the latter can be associated, via the (Metadata) [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]], to many MSDs/DSDs. Hence the reason for the restriction on the type of (% style="color:#2ecc71" %)Constraint(%%) that can be attached to a Metadata/[[Data Provider>>doc:xwiki:Glossary.Data provider.WebHome]].
21 21  
22 22  == 10.2 Types of Constraint ==
23 23  
24 -The Constraint can be of one of two types:
24 +The (% style="color:#2ecc71" %)Constraint(%%) can be of one of two types:
25 25  
26 -* Data constraint
27 -* Metadata constraint
26 +* Data (% style="color:#2ecc71" %)constraint
27 +* Metadata (% style="color:#2ecc71" %)constraint
28 28  
29 -The Data Constraint may serve two different perspectives, depending on the way the latter is retrieved. These are:
29 +The Data (% style="color:#2ecc71" %)Constraint(%%) may serve two different perspectives, depending on the way the latter is retrieved. These are:
30 30  
31 -* Allowed constraint
32 -* Actual constraint
31 +* Allowed (% style="color:#2ecc71" %)constraint
32 +* Actual (% style="color:#2ecc71" %)constraint
33 33  
34 -The former (allowed – also valid for Metadata Constraint) is specified by a data or metadata provider or consumer for sharing the allowed data and metadata in the context of their DSD or MSD exchanges, e.g., only Monthly data for a specific Dataflow. The latter (actual) is a dynamic Constraint in response to an availability request (only possible for data).
34 +The former (allowed – also valid for Metadata (% style="color:#2ecc71" %)Constraint(%%)) is specified by a data or metadata provider or consumer for sharing the allowed data and metadata in the context of their [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] or [[MSD>>doc:xwiki:Glossary.Metadata structure definition.WebHome]] exchanges, e.g., only Monthly data for a specific [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]. The latter (actual) is a dynamic (% style="color:#2ecc71" %)Constraint(%%) in response to an availability request (only possible for data).
35 35  
36 -For Actual Data Constraints, there a few characteristics that are worth noting:
36 +For Actual Data (% style="color:#2ecc71" %)Constraints(%%), there a few characteristics that are worth noting:
37 37  
38 38  * They can only be retrieved by the availability requests (as specified in the REST API).
39 -* They depend on the data available in an SDMX Web Service and thus they can only be dynamically generated according to that data.
40 -* Although they are Maintainable Artefacts, they cannot change independently of data; thus, they cannot be versioned (they are non-versioned, as explained in section 14).
39 +* They depend on the data available in an [[SDMX>>doc:xwiki:Glossary.Statistical data and metadata exchange.WebHome]] Web Service and thus they can only be dynamically generated according to that data.
40 +* Although they are [[Maintainable Artefacts>>doc:xwiki:Glossary.Maintainable artefact.WebHome]], they cannot change independently of data; thus, they cannot be versioned (they are non-versioned, as explained in section 14).
41 41  * Their identifier may also be dynamically generated and thus there is no REST resource based on their identification.
42 42  
43 43  == 10.3 Rules for a Constraint ==
... ... @@ -44,61 +44,61 @@
44 44  
45 45  === 10.3.1 Scope of a Constraint ===
46 46  
47 -A Constraint is used specify the content of a data or metadata source in terms of the component values or the keys.
47 +A (% style="color:#2ecc71" %)Constraint(%%) is used specify the content of a data or metadata source in terms of the [[component>>doc:xwiki:Glossary.Component.WebHome]] values or the keys.
48 48  
49 -In terms of data the components are:
49 +In terms of data the [[components>>doc:xwiki:Glossary.Component.WebHome]] are:
50 50  
51 -* Dimension
52 -* Time Dimension
53 -* Data Attribute
54 -* Measure
55 -* Metadata Attribute
56 -* DataKeySets: the keys are the content of the KeyDescriptor – i.e., the series keys composed, for each key, by a value for each Dimension.
51 +* [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]]
52 +* Time [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]]
53 +* Data [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]]
54 +* [[Measure>>doc:xwiki:Glossary.Measure.WebHome]]
55 +* Metadata [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]]
56 +* DataKeySets: the keys are the content of the KeyDescriptor – i.e., the [[series keys>>doc:xwiki:Glossary.Series key.WebHome]] composed, for each key, by a value for each [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]].
57 57  
58 -In terms of reference metadata the components are:
58 +In terms of [[reference metadata>>doc:xwiki:Glossary.Reference metadata.WebHome]] the [[components>>doc:xwiki:Glossary.Component.WebHome]] are:
59 59  
60 -* Metadata Attribute
60 +* Metadata [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]]
61 61  
62 -For a Constraint based on a DSD the Constraint can reference one or more of:
62 +For a (% style="color:#2ecc71" %)Constraint(%%) based on a [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] the (% style="color:#2ecc71" %)Constraint(%%) can reference one or more of:
63 63  
64 64  * Data Structure Definition
65 -* Dataflow
66 -* Provision Agreement
67 -* Data Provider
65 +* [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]
66 +* [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]]
67 +* [[Data Provider>>doc:xwiki:Glossary.Data provider.WebHome]]
68 68  
69 -For a Constraint based on an MSD the Constraint can reference one or more of:
69 +For a (% style="color:#2ecc71" %)Constraint(%%) based on an [[MSD>>doc:xwiki:Glossary.Metadata structure definition.WebHome]] the (% style="color:#2ecc71" %)Constraint(%%) can reference one or more of:
70 70  
71 71  * Metadata Structure Definition
72 -* Metadataflow
73 -* Metadata Provision Agreement
72 +* [[Metadataflow>>doc:xwiki:Glossary.Metadataflow.WebHome]]
73 +* Metadata [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]]
74 74  * Metadata Provider
75 75  * Metadata Set
76 76  
77 -Furthermore, there can be more than one Constraint specified for a specific object e.g., more than one Constraint for a specific DSD.
77 +Furthermore, there can be more than one (% style="color:#2ecc71" %)Constraint(%%) specified for a specific object e.g., more than one (% style="color:#2ecc71" %)Constraint(%%) for a specific [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]].
78 78  
79 -In view of the flexibility of constraints attachment, clear rules on their usage are required. These are elaborated below.
79 +In view of the flexibility of (% style="color:#2ecc71" %)constraints(%%) attachment, clear rules on their usage are required. These are elaborated below.
80 80  
81 81  === 10.3.2 Multiple Constraints ===
82 82  
83 -There can be many Constraints for any Constrainable Artefact (e.g., DSD), subject to the following restrictions:
83 +There can be many (% style="color:#2ecc71" %)Constraints(%%) for any Constrainable [[Artefact>>doc:xwiki:Glossary.Artefact.WebHome]] (e.g., [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]]), subject to the following restrictions:
84 84  
85 85  ==== 10.3.2.1 Cube Region ====
86 86  
87 -A Constraint can contain multiple Member Selections (e.g., Dimensions).
87 +A (% style="color:#2ecc71" %)Constraint(%%) can contain multiple [[Member Selections>>doc:xwiki:Glossary.Member selection.WebHome]] (e.g., [[Dimensions>>doc:xwiki:Glossary.Dimension.WebHome]]).
88 88  
89 -* A specific Member Selection (e.g., Dimension FREQ) can only be contained in one Cube Region for any one attached object (e.g., a specific DSD or specific Dataflow).
90 -* Component values within a Member Selection may define a validity period. Otherwise, the value is valid for the whole validity of the Cube Region.
91 -* For partial reference resolution purposes (as per the SDMX REST API), the latest non-draft Constraint must be considered.
92 -* A Member Selection may include wildcarding of values (using character ‘%’ to represent zero or more occurrences of any character), as well as cascading through hierarchic structures (e.g., parents in Codelist), or localised values (e.g., text for English only). Lack of locale means any language may match. Cascading values are mutual exclusive to localised values, as the former refer to coded values, while the latter refer to uncoded values.
93 -* Any values included in a Member Selection for Components with an array data type (i.e., Measures, Attributes or Metadata Attributes), will be applied as single values and will not be assessed combined with other values to match all possible array values. For example, including the Code ‘A’ for an Attribute will allow any instance of the Attribute that includes ‘A’, like [‘A’, ‘B’] or [‘A’, ‘C’, ‘D’]. Similarly, if Code ‘A’ was excluded, all those arrays of values would also be excluded.
89 +* A specific [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] (e.g., [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]] FREQ) can only be contained in one Cube Region for any one attached object (e.g., a specific [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] or specific [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]).
90 +* [[Component>>doc:xwiki:Glossary.Component.WebHome]] values within a [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] may define a validity period. Otherwise, the value is valid for the whole validity of the Cube Region.
91 +* For partial reference resolution purposes (as per the [[SDMX>>doc:xwiki:Glossary.Statistical data and metadata exchange.WebHome]] REST API), the latest non-draft (% style="color:#2ecc71" %)Constraint(%%) must be considered.
92 +* A [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] may include wildcarding of values (using character ‘%’ to represent zero or more occurrences of any character), as well as cascading through hierarchic structures (e.g., parents in Codelist), or localised values (e.g., text for English only). Lack of locale means any language may match. Cascading values are mutual exclusive to localised values, as the former refer to coded values, while the latter refer to uncoded values.
93 +* Any values included in a [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] for [[Components>>doc:xwiki:Glossary.Component.WebHome]] with an array data type (i.e., [[Measures>>doc:xwiki:Glossary.Measure.WebHome]], [[Attributes>>doc:xwiki:Glossary.Attribute.WebHome]] or Metadata [[Attributes>>doc:xwiki:Glossary.Attribute.WebHome]]), will be applied as single values and will not be assessed combined with other values to match all possible array values. For example, including the [[Code>>doc:xwiki:Glossary.Code.WebHome]] ‘A’ for an [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]] will allow any instance of the [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]] that includes ‘A’, like [‘A’, ‘B’] or [‘A’, ‘C’, ‘D’]. Similarly, if [[Code>>doc:xwiki:Glossary.Code.WebHome]] ‘A’ was excluded, all those arrays of values would also be excluded.
94 94  
95 95  ==== 10.3.2.2 Key Set ====
96 96  
97 -Key Sets will be processed in the order they appear in the Constraint and wildcards can be used (e.g., any key position not reference explicitly is deemed to be "all values").
97 +Key Sets will be processed in the order they appear in the (% style="color:#2ecc71" %)Constraint(%%) and wildcards can be used (e.g., any key position not reference explicitly is deemed to be "all values").
98 98  
99 -As the Key Sets can be "included" or "excluded" it is recommended that Key Sets with wildcards are declared before KeySets with specific series keys. This will minimize the risk that keys are inadvertently included or excluded.
99 +As the Key Sets can be "included" or "excluded" it is recommended that Key Sets with wildcards are declared before KeySets with specific [[series keys>>doc:xwiki:Glossary.Series key.WebHome]]. This will minimize the risk that keys are inadvertently included or excluded.
100 100  
101 -In addition, Attribute, Measure and Metadata Attribute constraints may accompany KeySets, in order to specify the allowed values per Key. Those are expressed following the rules for Cube Regions, as explained above.
101 +In addition, [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]], [[Measure>>doc:xwiki:Glossary.Measure.WebHome]] and Metadata [[Attribute>>doc:xwiki:Glossary.Attribute.WebHome]] (% style="color:#2ecc71" %)constraints(%%) may accompany KeySets, in order to specify the allowed values per Key. Those are expressed following the rules for Cube Regions, as explained above.
102 102  
103 103  Finally, a validity period may be specified per Key.
104 104  
... ... @@ -106,52 +106,52 @@
106 106  
107 107  ==== 10.3.3.1 Attachment levels of a Constraint ====
108 108  
109 -There are three levels of constraint attachment for which these inheritance rules apply:
109 +There are three (% style="color:#2ecc71" %)levels(%%) of (% style="color:#2ecc71" %)constraint(%%) attachment for which these inheritance rules apply:
110 110  
111 -• DSD/MSD – top level o Dataflow/Metadataflow – second level
111 +• [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]]/[[MSD>>doc:xwiki:Glossary.Metadata structure definition.WebHome]] – top (% style="color:#2ecc71" %)level(%%) o [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]/[[Metadataflow>>doc:xwiki:Glossary.Metadataflow.WebHome]] – second (% style="color:#2ecc71" %)level
112 112  
113 -▪ Provision Agreement – third level
113 +▪ [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]] – third (% style="color:#2ecc71" %)level
114 114  
115 -Note that these rules do not apply to the Simple Datasource or Queryable Datasource; the Constraint(s) attached to these artefacts are resolved for this artefact only and do not take into account Constraints attached to other artefacts (e.g., Provision Agreement, Dataflow, DSD).
115 +Note that these rules do not apply to the Simple Datasource or Queryable Datasource; the (% style="color:#2ecc71" %)Constraint(%%)(s) attached to these [[artefacts>>doc:xwiki:Glossary.Artefact.WebHome]] are resolved for this [[artefact>>doc:xwiki:Glossary.Artefact.WebHome]] only and do not take into account (% style="color:#2ecc71" %)Constraints(%%) attached to other [[artefacts>>doc:xwiki:Glossary.Artefact.WebHome]] (e.g., [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]], [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]], [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]]).
116 116  
117 -It is not necessary for a Constraint to be attached to a higher level artefact. e.g., it is valid to have a Constraint for a Provision Agreement where there are no constraints attached the relevant dataflow or DSD.
117 +It is not necessary for a (% style="color:#2ecc71" %)Constraint(%%) to be attached to a higher (% style="color:#2ecc71" %)level(%%) [[artefact>>doc:xwiki:Glossary.Artefact.WebHome]]. e.g., it is valid to have a (% style="color:#2ecc71" %)Constraint(%%) for a [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]] where there are no (% style="color:#2ecc71" %)constraints(%%) attached the relevant [[dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]] or [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]].
118 118  
119 119  ==== 10.3.3.2 Cascade rules for processing Constraints ====
120 120  
121 -The processing of the constraints on either Dataflow/Metadataflow or Provision Agreement must take into account the constraints declared at higher levels. The rules for the lower-level constraints (attached to Dataflow/ Metadataflow and Provision Agreement) are detailed below.
121 +The processing of the (% style="color:#2ecc71" %)constraints(%%) on either [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]/[[Metadataflow>>doc:xwiki:Glossary.Metadataflow.WebHome]] or [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]] must take into account the (% style="color:#2ecc71" %)constraints(%%) declared at higher (% style="color:#2ecc71" %)levels(%%). The rules for the lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)constraints(%%) (attached to [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]/ [[Metadataflow>>doc:xwiki:Glossary.Metadataflow.WebHome]] and [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]]) are detailed below.
122 122  
123 -Note that there can be a situation where a constraint is specified at a lower level before a constraint is specified at a higher level. Therefore, it is possible that a higher-level constraint makes a lower-level constraint invalid. SDMX makes no rules on how such a conflict should be handled when processing the constraint for attachment. However, the cascade rules on evaluating constraints for usage are clear – the higher-level constraint takes precedence in any conflicts that result in a less restrictive specification at the lower level.
123 +Note that there can be a situation where a (% style="color:#2ecc71" %)constraint(%%) is specified at a lower (% style="color:#2ecc71" %)level(%%) before a (% style="color:#2ecc71" %)constraint(%%) is specified at a higher (% style="color:#2ecc71" %)level(%%). Therefore, it is possible that a higher-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)constraint(%%) makes a lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)constraint(%%) invalid. [[SDMX>>doc:xwiki:Glossary.Statistical data and metadata exchange.WebHome]] makes no rules on how such a conflict should be handled when processing the (% style="color:#2ecc71" %)constraint(%%) for attachment. However, the cascade rules on evaluating (% style="color:#2ecc71" %)constraints(%%) for usage are clear – the higher-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)constraint(%%) takes precedence in any conflicts that result in a less restrictive specification at the lower (% style="color:#2ecc71" %)level(%%).
124 124  
125 125  ==== 10.3.3.3 Cube Region ====
126 126  
127 -It is not necessary to have a Constraint on the higher-level artefact (e.g., DSD referenced by the Dataflow), but if there is such a Constraint at the higher level(s) then:
127 +It is not necessary to have a (% style="color:#2ecc71" %)Constraint(%%) on the higher-(% style="color:#2ecc71" %)level(%%) [[artefact>>doc:xwiki:Glossary.Artefact.WebHome]] (e.g., [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]), but if there is such a (% style="color:#2ecc71" %)Constraint(%%) at the higher (% style="color:#2ecc71" %)level(%%)(s) then:
128 128  
129 -* The lower-level Constraint cannot be less restrictive than the Constraint specified for the same Member Selection (e.g. Dimension) at the next higher level, which constrains that Member Selection. For example, if the Dimension FREQ is constrained to A, Q in a DSD, then the Constraint at the Dataflow or Provision Agreement cannot be A, Q, M or even just M – it can only further constrain A, Q.
130 -* The Constraint at the lower level for any one Member Selection further constrains the content for the same Member Selection at the higher level(s).
131 -* Any Member Selection, which is not referenced in a Constraint, is deemed to be constrained according to the Constraint specified at the next higher level which constraints that Member Selection.
132 -* If there is a conflict when resolving the Constraint in terms of a lower-level Constraint being less restrictive than a higher-level Constraint, then the Constraint at the higher-level is used.
129 +* The lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%) cannot be less restrictive than the (% style="color:#2ecc71" %)Constraint(%%) specified for the same [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] (e.g. [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]]) at the next higher (% style="color:#2ecc71" %)level(%%), which constrains that [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]]. For example, if the [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]] FREQ is constrained to A, Q in a [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]], then the (% style="color:#2ecc71" %)Constraint(%%) at the [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]] or [[Provision Agreement>>doc:xwiki:Glossary.Provision agreement.WebHome]] cannot be A, Q, M or even just M – it can only further constrain A, Q.
130 +* The (% style="color:#2ecc71" %)Constraint(%%) at the lower (% style="color:#2ecc71" %)level(%%) for any one [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] further constrains the content for the same [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] at the higher (% style="color:#2ecc71" %)level(%%)(s).
131 +* Any [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]], which is not referenced in a (% style="color:#2ecc71" %)Constraint(%%), is deemed to be constrained according to the (% style="color:#2ecc71" %)Constraint(%%) specified at the next higher (% style="color:#2ecc71" %)level(%%) which (% style="color:#2ecc71" %)constraints(%%) that [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]].
132 +* If there is a conflict when resolving the (% style="color:#2ecc71" %)Constraint(%%) in terms of a lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%) being less restrictive than a higher-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%), then the (% style="color:#2ecc71" %)Constraint(%%) at the higher-(% style="color:#2ecc71" %)level(%%) is used.
133 133  
134 -Note that it is possible for a Constraint at a higher level to constrain, say, four Dimensions in a single Constraint, and a Constraint at a lower level to constrain the same four in two, three, or four Constraints.
134 +Note that it is possible for a (% style="color:#2ecc71" %)Constraint(%%) at a higher (% style="color:#2ecc71" %)level(%%) to constrain, say, four [[Dimensions>>doc:xwiki:Glossary.Dimension.WebHome]] in a single (% style="color:#2ecc71" %)Constraint(%%), and a (% style="color:#2ecc71" %)Constraint(%%) at a lower (% style="color:#2ecc71" %)level(%%) to constrain the same four in two, three, or four (% style="color:#2ecc71" %)Constraints(%%).
135 135  
136 136  ==== 10.3.3.4 Key Set ====
137 137  
138 -It is not necessary to have a Constraint on the higher-level artefact (e.g., DSD referenced by the Dataflow), but if there is such a Constraint at the higher level(s) then:
138 +It is not necessary to have a (% style="color:#2ecc71" %)Constraint(%%) on the higher-(% style="color:#2ecc71" %)level(%%) [[artefact>>doc:xwiki:Glossary.Artefact.WebHome]] (e.g., [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] referenced by the [[Dataflow>>doc:xwiki:Glossary.Dataflow.WebHome]]), but if there is such a (% style="color:#2ecc71" %)Constraint(%%) at the higher (% style="color:#2ecc71" %)level(%%)(s) then:
139 139  
140 -* The lower-level Constraint cannot be less restrictive than the Constraint specified at the higher level.
141 -* The Constraint at the lower level for any one Member Selection further constrains the keys specified at the higher level(s).
142 -* Any Member Selection, which is not referenced in a Constraint, is deemed to be constrained according to the Constraint specified at the next higher level which constraints that Member Selection.
143 -* If there is a conflict when resolving the keys in the Constraint at two levels, in terms of a lower-level constraint being less restrictive than a higher-level Constraint, then the offending keys specified at the lower level are not deemed part of the Constraint.
140 +* The lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%) cannot be less restrictive than the (% style="color:#2ecc71" %)Constraint(%%) specified at the higher (% style="color:#2ecc71" %)level(%%).
141 +* The (% style="color:#2ecc71" %)Constraint(%%) at the lower (% style="color:#2ecc71" %)level(%%) for any one [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]] further constrains the keys specified at the higher (% style="color:#2ecc71" %)level(%%)(s).
142 +* Any [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]], which is not referenced in a (% style="color:#2ecc71" %)Constraint(%%), is deemed to be constrained according to the (% style="color:#2ecc71" %)Constraint(%%) specified at the next higher (% style="color:#2ecc71" %)level(%%) which (% style="color:#2ecc71" %)constraints(%%) that [[Member Selection>>doc:xwiki:Glossary.Member selection.WebHome]].
143 +* If there is a conflict when resolving the keys in the (% style="color:#2ecc71" %)Constraint(%%) at two (% style="color:#2ecc71" %)levels(%%), in terms of a lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)constraint(%%) being less restrictive than a higher-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%), then the offending keys specified at the lower (% style="color:#2ecc71" %)level(%%) are not deemed part of the (% style="color:#2ecc71" %)Constraint(%%).
144 144  
145 -Note that a Key in a Key Set can have wildcarded Components. For instance, the Constraint may simply constrain the Dimension FREQ to "A", and all keys where the FREQ="A" are therefore valid.
145 +Note that a Key in a Key Set can have wildcarded [[Components>>doc:xwiki:Glossary.Component.WebHome]]. For instance, the (% style="color:#2ecc71" %)Constraint(%%) may simply constrain the [[Dimension>>doc:xwiki:Glossary.Dimension.WebHome]] FREQ to "A", and all keys where the FREQ="A" are therefore valid.
146 146  
147 147  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.
148 148  
149 -*
150 -*1. Determine all possible keys that are valid at the higher level.
151 -*1. These keys are deemed to be inherited by the lower-level constrained object, subject to the Constraints specified at the lower level.
152 -*1. Determine all possible keys that are possible using the Constraints specified at the lower level.
153 -*1. At the lower level inherit all keys that match with the higher-level Constraint.
154 -*1. If there are keys in the lower-level Constraint that are not inherited then the key is invalid (i.e., it is less restrictive).
149 +*
150 +*1. Determine all possible keys that are valid at the higher (% style="color:#2ecc71" %)level(%%).
151 +*1. These keys are deemed to be inherited by the lower-(% style="color:#2ecc71" %)level(%%) constrained object, subject to the (% style="color:#2ecc71" %)Constraints(%%) specified at the lower (% style="color:#2ecc71" %)level(%%).
152 +*1. Determine all possible keys that are possible using the (% style="color:#2ecc71" %)Constraints(%%) specified at the lower (% style="color:#2ecc71" %)level(%%).
153 +*1. At the lower (% style="color:#2ecc71" %)level(%%) inherit all keys that match with the higher-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%).
154 +*1. If there are keys in the lower-(% style="color:#2ecc71" %)level(%%) (% style="color:#2ecc71" %)Constraint(%%) that are not inherited then the key is invalid (i.e., it is less restrictive).
155 155  
156 156  === 10.3.4 Constraints Examples ===
157 157  
... ... @@ -159,7 +159,7 @@
159 159  
160 160  The following scenario is used.
161 161  
162 -A DSD contains the following Dimensions:
162 +A [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]] contains the following [[Dimensions>>doc:xwiki:Glossary.Dimension.WebHome]]:
163 163  
164 164  * GEO – Geography
165 165  * SEX – Sex
... ... @@ -166,7 +166,7 @@
166 166  * AGE – Age
167 167  * CAS – Current Activity Status
168 168  
169 -In the DSD, common code lists are used and the requirement is to restrict these at various levels to specify the actual code that are valid for the object to which the Constraint is attached.
169 +In the [[DSD>>doc:xwiki:Glossary.Data structure definition.WebHome]], common [[code lists>>doc:xwiki:Glossary.Code list.WebHome]] are used and the requirement is to restrict these at various (% style="color:#2ecc71" %)levels(%%) to specify the actual [[code>>doc:xwiki:Glossary.Code.WebHome]] that are valid for the object to which the (% style="color:#2ecc71" %)Constraint(%%) is attached.
170 170  
171 171  [[image:SDMX 3-0-0 SECTION 6 FINAL-1.0_en_77bea5e.png||height="344" width="554"]]
172 172  
... ... @@ -265,42 +265,29 @@
265 265  
266 266  This may be expressed with the following CubeRegion:
267 267  
268 +[[image:1747387231598-634.png]]
268 268  
269 -|FREQ|M, Q
270 -|VIS_CTY|MX
271 -|OBS_STATUS|A
272 -
273 273  ===== 10.3.4.2.4 Use Case 4: A Constraint on allowed combinations for some =====
274 274  
275 275  //**Dimensions combined with specific Attribute values**//
276 276  
277 277  R1: Allow monthly data, for Germany, with unit euro
278 -
279 279  R2: Allow quarterly data, for Mexico, with unit usd
280 280  
281 281  This is may be expressed with the following DataKeySet:
282 282  
283 -|(% rowspan="3" style="width:87px" %)Key1|(% style="width:1327px" %)FREQ|M
284 -|(% style="width:1327px" %)VIS_CTY|DE
285 -|(% style="width:1327px" %)UNIT|EUR
286 -|(% rowspan="3" style="width:87px" %)Key2|(% style="width:1327px" %)FREQ|Q
287 -|(% style="width:1327px" %)VIS_CTY|MX
288 -|(% style="width:1327px" %)UNIT|USD
279 +[[image:1747387252077-954.png]]
289 289  
281 +[[image:1747387281625-859.png]]
282 +
290 290  ===== 10.3.4.2.5 Use Case 5: A Constraint on allowed values for some Dimensions together with some combination of Dimension values =====
291 291  
292 292  R1: For annually and quarterly data, for Mexico and Germany, only A status is allowed
293 -
294 294  R2: For monthly data, for Mexico and Germany, only F status is allowed
295 295  
296 296  Considering the above examples, the following CubeRegions would be created:
297 297  
298 -|(% rowspan="3" %)CubeRegion1|FREQ|Q, A
299 -|VIS_CTY|MX, DE
300 -|OBS_STATUS|A
301 -|(% rowspan="3" %)CubeRegion2|FREQ|M
302 -|VIS_CTY|MX, DE
303 -|OBS_STATUS|F
290 +[[image:1747387330751-405.png]]
304 304  
305 305  The problem with this approach is that according to the business rule for Constraints, only one should be specified per Component. 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).
306 306  
... ... @@ -308,36 +308,22 @@
308 308  
309 309  DSD CubeRegion:
310 310  
311 -|FREQ|M, Q, A
312 -|VIS_CTY|MX, DE
313 -|OBS_STATUS|A, F
298 +[[image:1747387369822-932.png]]
314 314  
315 315  Dataflow1 CubeRegion:
316 316  
317 -|FREQ|Q, A
318 -|VIS_CTY|MX, DE
319 -|OBS_STATUS|F
302 +[[image:1747387387944-676.png]]
320 320  
321 321  Dataflow2 CubeRegion:
322 322  
323 -|FREQ|M
324 -|VIS_CTY|MX, DE
325 -|OBS_STATUS|A
306 +[[image:1747387401689-306.png]]
326 326  
327 327  ===== 10.3.4.2.6 Use case 6: A Constraint on allowed values for some Dimensions combined with allowed values for Measures =====
328 328  
329 329  R1: Allow monthly data, for Germany, with unit euro, and measure choice is 'A'
330 -
331 331  R2: Allow quarterly data, for Mexico, with unit usd, and measure choice is 'B' This is may be expressed with the following DataKeySet:
332 332  
333 -|(% rowspan="4" %)Key1|FREQ|M
334 -|VIS_CTY|DE
335 -|UNIT|EUR
336 -|CHOICE|A
337 -|(% rowspan="4" %)Key2|FREQ|Q
338 -|VIS_CTY|MX
339 -|UNIT|USD
340 -|CHOICE|B
313 +[[image:1747387437317-733.png]]
341 341  
342 342  ===== 10.3.4.2.7 Use Case 7: A Constraint with wildcards for Codes and removePrefix property =====
343 343  
... ... @@ -344,43 +344,32 @@
344 344  For this example, we assume that the VIS_CTY representation has been prefixed with prefix ‘AREA_’. In this Constraint, we need to remove the prefix.
345 345  
346 346  R1: Allow monthly and quarterly data
347 -
348 348  R2: Allow vis-à-vis countries that start with M
349 -
350 350  R3: Remove the prefix ‘AREA_’
351 351  
323 +[[image:1747387461703-763.png]]
324 +
352 352  This may be expressed with the following CubeRegion:
353 353  
354 -|FREQ|M, Q
355 -|VIS_CTY (removePrefix=’AREA_’)|M%
356 -
357 357  ===== 10.3.4.2.8 Use Case 8: A Constraint with multilingual support on Attributes =====
358 358  
359 359  R1: Allow monthly and quarterly data
360 -
361 361  R2: Allow Mexico for vis-à-vis country
362 -
363 363  R3: Allow a comment, in English, which includes the term adjusted for status
364 364  
365 365  This may be expressed with the following CubeRegion:
366 366  
367 -|FREQ|M, Q
368 -|VIS_CTY|MX
369 -|COMMENT (lang=’en’)|%adjusted%
335 +[[image:1747387484366-337.png]]
370 370  
371 371  ===== 10.3.4.2.9 Use Case 9: A Constraint on allowed values for Dimensions combined with allowed values for Metadata Attributes =====
372 372  
373 373  R1: Allow monthly and quarterly data
374 -
375 375  R2: Allow Mexico for vis-à-vis country
376 -
377 377  R3: Allow John Doe for contact
378 378  
379 379  This may be expressed with the following CubeRegion:
380 380  
381 -|FREQ|M, Q
382 -|VIS_CTY|MX
383 -|CONTACT|John Doe
345 +[[image:1747387514061-293.png]]
384 384  
385 385  ==== 10.3.4.3 Other constraining terms ====
386 386  
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