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Changes for page 10 Constraints

Last modified by Artur on 2025/09/10 11:19
From version 1.8
edited by Helena
on 2025/06/16 12:17
Change comment: There is no comment for this version
To version 1.3
edited by Helena
on 2025/06/16 12:11
Change comment: There is no comment for this version

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158 158  
159 159  Data Constraint 1.0.0
160 160  
161 -(% style="width:573.294px" %)
162 -|(% style="width:108px" %)Component|(% style="width:127px" %)Valid Value|(% style="width:150px" %)Valid from|(% style="width:185px" %)Valid to
163 -|(% rowspan="3" style="width:108px" %)COUNTRY|(% style="width:127px" %)UK|(% style="width:150px" %) |(% style="width:185px" %)
164 -|(% style="width:127px" %)FR|(% style="width:150px" %) |(% style="width:185px" %)
165 -|(% style="width:127px" %)DE|(% style="width:150px" %) |(% style="width:185px" %)
161 +|Component|Valid Value|Valid from|Valid to
162 +|(% rowspan="3" %)COUNTRY|UK| |
163 +|FR| |
164 +|DE| |
166 166  
167 167  Data Constraint 1.1.0
168 168  
169 -(% style="width:576.294px" %)
170 -|(% style="width:110px" %)Component|(% style="width:129px" %)Valid Value|(% style="width:145px" %)Valid from|(% style="width:189px" %)Valid to
171 -|(% rowspan="3" style="width:110px" %)COUNTRY|(% style="width:129px" %)UK|(% style="width:145px" %) |(% style="width:189px" %)
172 -|(% style="width:129px" %)FR|(% style="width:145px" %) |(% style="width:189px" %)2012
173 -|(% style="width:129px" %)DE|(% style="width:145px" %) |(% style="width:189px" %)
168 +|Component|Valid Value|Valid from|Valid to
169 +|(% rowspan="3" %)COUNTRY|UK| |
170 +|FR| |2012
171 +|DE| |
174 174  
175 175  When both versions of the Data Constraint are in a system, an observation value reported against COUNTRY FR for time period 2013 would be deemed invalid as the 1.1.0 rule would be applied.
176 176  
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180 180  
181 181  There are three levels of constraint attachment for which these inheritance rules apply:
182 182  
183 -* DSD/MSD – top level
184 -** Dataflow/Metadataflow – second level
185 -*** Provision Agreement – third level
181 +* DSD/MSD – top level o Dataflow/Metadataflow – second level
182 +** Provision Agreement – third level
186 186  
187 187  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.
188 188  
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216 216  
217 217  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.
218 218  
219 -1. Determine all possible keys that are valid at the higher level.
220 -1. These keys are deemed to be inherited by the lower-level constrained object, subject to the Constraints specified at the lower level.
221 -1. Determine all possible keys that are possible using the Constraints specified at the lower level.
222 -1. At the lower level inherit all keys that match with the higher-level Constraint.
223 -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).
216 +1.
217 +11. Determine all possible keys that are valid at the higher level.
218 +11. These keys are deemed to be inherited by the lower-level constrained object, subject to the Constraints specified at the lower level.
219 +11. Determine all possible keys that are possible using the Constraints specified at the lower level.
220 +11. At the lower level inherit all keys that match with the higher-level Constraint.
221 +11. If there are keys in the lower-level Constraint that are not inherited then the key is invalid (i.e., it is less restrictive).
222 +111. Constraints Examples
224 224  
225 -=== 10.4.7 Constraints Examples ===
226 -
227 227  ==== 10.4.7.1 Data Constraint and Cascading ====
228 228  
229 229  The following scenario is used.
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237 237  
238 238  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.
239 239  
240 -[[image:1750065279010-260.png]]
241 241  
242 242  **Figure 20: Example Scenario for Constraints **Constraints are declared as follows:
243 243  
244 -[[image:1750065319060-899.png]]
245 245  
246 246  **Figure 21: Example Constraints**
247 247  
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282 282  
283 283  DSD Constraint
284 284  
285 -[[image:1750065367824-357.png]]
286 -
287 287  Dataflow Constraints
288 288  
289 -[[image:1750065392163-400.png]]
290 -
291 291  Provision Agreement Constraint
292 292  
293 -[[image:1750065461589-995.png]]
294 -
295 295  **10.4.7.2 Combination of Constraints**
296 296  
297 297  The possible combination of constraining terms are explained in this section, following a few examples.
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