Changes for page SDMX 3.0 Standards. Summary of Major Changes and New Functionality
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... ... @@ -1,1 +1,1 @@ 1 -SDMX STANDARDS 11 +SDMX STANDARDS - Content
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... ... @@ -65,7 +65,7 @@ 65 65 66 66 Version 3.0 introduces breaking changes into the web services API, transmission formats and information model. A summary is given in the table below. 67 67 68 -== //2.1 Web Services API//==68 +== 2.1 Web Services API == 69 69 70 70 (% style="width:948.039px" %) 71 71 |**REST API**|(% style="width:818px" %)((( ... ... @@ -86,7 +86,7 @@ 86 86 ))) 87 87 |**SOAP API**|(% style="width:818px" %)The SOAP API has been deprecated. 88 88 89 -== //2.2 Transmission Formats//==89 +== 2.2 Transmission Formats == 90 90 91 91 ((( 92 92 (% style="width:952.039px" %) ... ... @@ -122,7 +122,7 @@ 122 122 |(% style="width:130px" %)**SDMX-CSV**|(% style="width:820px" %)The CSV data and reference metadata messages are not backwardly compatible with those under version 2.1 due to changes to the structure of the messages needed to support new features such as the improved REST API data queries. 123 123 ))) 124 124 125 -== //2.3 Information Model//==125 +== 2.3 Information Model == 126 126 127 127 ((( 128 128 (% style="width:955.039px" %) ... ... @@ -177,7 +177,7 @@ 177 177 178 178 = 3 Information Model = 179 179 180 -== //3.1 Version 3.0 Information Model//==180 +== 3.1 Version 3.0 Information Model == 181 181 182 182 [[image:SDMX 3-0-0 Major Changes FINAL-1.0_en_6fc573fe.png||height="404" width="718"]] 183 183 ... ... @@ -187,7 +187,7 @@ 187 187 188 188 A number of ancillary structures including organisation schemes, process and reporting taxonomy are unchanged and have not been shown. Similarly, Organisation Scheme Map and Reporting Taxonomy Map have been omitted for simplicity. A schematic of the 2.1 model is given in Appendix A for comparison purposes. 189 189 190 -== //3.2 Key Changes from Version 2.1//==190 +== 3.2 Key Changes from Version 2.1 == 191 191 192 192 New Maintainable Artefacts 193 193 ... ... @@ -230,7 +230,7 @@ 230 230 231 231 * GeospatialInformation – a string type where the value is an expression defining a set of geographical features using a purpose-designed syntax 232 232 233 -== //3.3 Areas Unchanged from Version 2.1//==233 +== 3.3 Areas Unchanged from Version 2.1 == 234 234 235 235 The following areas of the information model are unchanged from version 2.1: 236 236 ... ... @@ -243,7 +243,7 @@ 243 243 * Reporting taxonomy 244 244 * Process 245 245 246 -== //3.4 Reference Metadata//==246 +== 3.4 Reference Metadata == 247 247 248 248 Reference metadata has been substantially re-designed for version 3.0 to simplify the model and better support practical use cases. 249 249 ... ... @@ -272,83 +272,45 @@ 272 272 * SOURCE_AGENCY – a multi-value data attribute 273 273 274 274 <Obs xsi:type="dsd:ObsType" OBS_VALUE="112" OBS_STAUS=”A” TIME_PERIOD="2010-09"> 275 - 276 276 <!—- complex multi-value and multi-lingual data attributes ~-~-> 277 - 278 278 <Comp id="TITLE" xsi:type="ns1:TITLE_ATTRIBUTE"> 279 - 280 280 <Value> 281 - 282 282 <common:Text xml:lang="en">Some English Text</common:Text> 283 - 284 284 <common:Text xml:lang="fr">Quelques textes en anglais</common:Text> 285 - 286 286 </Value> 287 - 288 288 </Comp> 289 289 290 290 <Comp id="SOURCE_AGENCY" xsi:type="ns1:SOURCE_AGENCY_ATTRIBUTE"> 291 - 292 292 <Value>4F0</Value> 293 - 294 294 <Value>4D0</Value> 295 - 296 296 <Value>CZ2</Value> 297 - 298 298 </Comp> 299 - 300 300 <!—- metadata attributes are reported like in metadata messages ~-~-> 301 - 302 302 <Metadata> 303 - 304 304 <Attribute id="COLLECTION"> 305 - 306 306 <Attribute id="METHOD"> 307 - 308 308 <Text lang="en">AAA</Text> 309 - 310 310 </Attribute> 311 - 312 312 </Attribute> 313 - 314 314 <Attribute id="CONTACT"> 315 - 316 316 <Value>CONTACT 1</Value> 317 - 318 318 <Attribute id="NAME"> 319 - 320 320 <Value>Contact 1 Name 1</Value> 321 - 322 322 </Attribute> 323 - 324 324 <Attribute id="NAME"> 325 - 326 326 <Value>Contact 1 Name 2</Value> 327 - 328 328 </Attribute> 329 - 330 330 </Attribute> 331 - 332 332 <Attribute id="CONTACT"> 333 - 334 334 <Value>CONTACT 2</Value> 335 - 336 336 <Attribute id="NAME"> 337 - 338 338 <Value>Contact 2 Name 1</Value> 339 - 340 340 </Attribute> 341 - 342 342 <Attribute id="NAME"> 343 - 344 344 <Value>Contact 2 Name 2</Value> 345 - 346 346 </Attribute> 347 - 348 348 </Attribute> 349 - 350 350 </Metadata> 351 - 352 352 </Obs> 353 353 354 354 === New - Metadata Provision Agreement === ... ... @@ -363,7 +363,7 @@ 363 363 364 364 A Metadataset now has mandatory identification information, (owner id, id, version) enabling metadata providers to uniquely identify their reports for create, update or delete maintenance operations. 365 365 366 -== //3.5 Microdata Exchange//==328 +== 3.5 Microdata Exchange == 367 367 368 368 Several changes have been made the Data Structure Definition to support microdata use cases in addition to aggregated time series. 369 369 ... ... @@ -376,31 +376,18 @@ 376 376 MeasureDimension behaviour as illustrated in the SDMX-ML example below: 377 377 378 378 <str:MeasureList id=”MeasureDescriptor”> 379 - 380 380 <str:Measure id=”OBS_VALUE” minOccurs=”1” maxOccurs=”1” usage=”mandatory” > <str:ConceptIdentity> 381 - 382 382 <Ref id=”OBS_VALUE” maintainableParentID=”CONCEPTS” agencyID=”SDMX” maintainableParentVersion=”1.0.0” /> 383 - 384 384 </str:ConceptIdentity> 385 - 386 386 <str:LocalRepresentation> 387 - 388 388 <str:TextFormat textType=”String” isMultiLingual=”true” /> 389 - 390 390 </str:LocalRepresentation> 391 - 392 392 <str:ConceptRole> 393 - 394 394 <Ref id=”MEASURE” maintainableParentID=”SDMX_CONCEPT_ROLES” agencyID=”SDMX” maintainableParentVersion=”1.0.0” /> 395 - 396 396 </str:ConceptRole> 397 - 398 398 </str:Measure> 399 - 400 400 ... 401 - 402 402 <str:Measure> 403 - 404 404 </str:MeasureList> 405 405 406 406 === Multi-value measures and attributes === ... ... @@ -421,7 +421,7 @@ 421 421 422 422 That allows ValueItems (the equivalent to Code) to contain symbols like ‘¥’ and ‘€’, but 208 also means they are not identifiable. 423 423 424 -== //3.6 Geospatial Data Exchange//==373 +== 3.6 Geospatial Data Exchange == 425 425 426 426 The version 3.0 model has been extended to provide explicit support for geospatial data. 427 427 ... ... @@ -436,7 +436,7 @@ 436 436 * GeographicCodelist – each item includes an element to represent a specific Geo Feature Set which is described using the same expression syntax as for GeospatialInformation type. 437 437 * GeoGridCodelist – A code list defining a geographical grid composed of cells representing regular squared portions of the Earth. Each item references a cell within the grid. 438 438 439 -=== //3.7 Structure Mapping//===388 +=== 3.7 Structure Mapping === 440 440 441 441 The Structure Set in version 2.1 is a container for many mapping structures including Data Structure Map, Codelist Map and Concept Map. For version 3.0 the Structure Set artefact has been deprecated and replaced with a number of new maintainables giving better flexibility and reusability, specifically: Structure Map, Concept Scheme Map, Representation Map, Reporting Taxonomy Map, Category Scheme Map and Organisation Scheme Map. 442 442 ... ... @@ -468,7 +468,7 @@ 468 468 469 469 Item maps may further define the period for which the mapping is valid, meaning the mapping rule will only be applied if the row of information being mapped is within the period. 470 470 471 -=== //3.8 Constraints//===420 +=== 3.8 Constraints === 472 472 473 473 Constraints in version 3.0 are modelled using two separate artefacts which replace the version 2.1 content constraint: 474 474 ... ... @@ -483,17 +483,17 @@ 483 483 484 484 Attachment constraints have been deprecated due to a lack of use cases. 485 485 486 -=== //3.9 Code List Extension//===435 +=== 3.9 Code List Extension === 487 487 488 488 In addition to the two new specialised geospatial forms, the option has been added to define a code list as an extension of, or by inheriting codes from, other lists. An optional prefix can be added to inherited codes to disambiguate duplicates. 489 489 490 490 This feature allows new code lists to be easily derived from existing lists without the need to make and manually maintain copies. When querying for extended code list structures using the REST API, the option has been added to retrieve either the definition or the materialised list. Traditional literal lists of codes continue to be supported. 491 491 492 -=== //3.10 Discriminated Union of Code Lists//===441 +=== 3.10 Discriminated Union of Code Lists === 493 493 494 494 Combining code list extension with wildcarded constraints solves the discriminated union of code lists problem where a classification or breakdown has multiple “variants” which are all valid but mutually exclusive. A common example is economic activity where several alternative classification schemes are in use including ISIC revisions 1 to 4 and NACE as used in the European Community. 495 495 496 -=== //3.11 Code Hierarchies//===445 +=== 3.11 Code Hierarchies === 497 497 498 498 Code hierarchies allow the definition of complex hierarchies of codes from potentially multiple lists for data discovery purposes. Hierarchical Codelist has been deprecated and replaced by two new artefacts: Hierarchy – the actual hierarchy of codes, and Hierarchy Association links hierarchies directly to any other identifiable object, a capability missing 312 from the version 2.1 model. Further, the linkage can be within a particular context, for instance linking a hierarchy to a dimension within the context of a specific Dataflow (dimension REF_AREA in the context of the ECB:EXR Dataflow). 499 499 ... ... @@ -541,7 +541,7 @@ 541 541 542 542 = 5 REST Web Services API = 543 543 544 -== //5.1 Simplified list of resources//==493 +== 5.1 Simplified list of resources == 545 545 546 546 The version 3.0 REST API has just five main resources: 547 547 ... ... @@ -555,7 +555,7 @@ 555 555 556 556 This and changes in the URLs and query parameters on the data, availability and metadata resources means that, with the exception of schema queries, the version 3.0 API is not backwardly compatible. 557 557 558 -== //5.2 Improved data queries//==507 +== 5.2 Improved data queries == 559 559 560 560 Data queries have been changed to provide more granular selections from contexts wider than just a Dataflow. 561 561 ... ... @@ -594,7 +594,7 @@ 594 594 595 595 /data/dataflow/ESTAT/ICP/1.0.0/M…A.ANR,M…A.INX,M…B.CTG 596 596 597 -== //5.3 Improved reference metadata queries//==546 +== 5.3 Improved reference metadata queries == 598 598 599 599 Reference metadata queries have been improved with a number of new options to retrieve metadata reports. 600 600 ... ... @@ -610,7 +610,7 @@ 610 610 611 611 /metadata/structure/datastructure/BIS/BIS_CBS/1.0 612 612 613 -== //5.4 Structural metadata maintenance//==562 +== 5.4 Structural metadata maintenance == 614 614 615 615 Support has been added for maintenance of structural metadata. 616 616 ... ... @@ -618,7 +618,7 @@ 618 618 619 619 = 6 XML, JSON, CSV and EDI Transmission formats = 620 620 621 -== //6.1 SDMX-ML//==570 +== 6.1 SDMX-ML == 622 622 623 623 The SDMX-ML XML messages have been modified and updated for version 3.0. While they broadly follow the same principles, there have been significant changes which break backward compatibility. 624 624 ... ... @@ -704,7 +704,7 @@ 704 704 705 705 The option to reference structures using Agency, ID and Version has been removed. From SDMX version 3.0 URN is used for all referencing purposes with the exception of local references such as where groups reference dimensions within a DSD. 706 706 707 -== //6.2 SDMX-JSON//==656 +== 6.2 SDMX-JSON == 708 708 709 709 Like SDMX-ML, the SDMX-JSON messages have been significantly modified and updated for version 3.0. They are not backwardly compatible with version 2.1. 710 710 ... ... @@ -724,7 +724,7 @@ 724 724 725 725 As for SDMX-ML, the option to reference structures using Agency, ID and Version has been removed with URN used for all non-local referencing purposes. 726 726 727 -== //6.3 SDMX-CSV//==676 +== 6.3 SDMX-CSV == 728 728 729 729 CSV in SDMX is used transmission of data and reference metadata only. 730 730 ... ... @@ -742,7 +742,7 @@ 742 742 743 743 The SDMX-CSV metadata message is new for version 3.0 and, like the SDMX-ML and SDMX-JSON equivalents, is used for the transmission reference metadata sets. 744 744 745 -=== //6.4 EDI deprecation//===694 +=== 6.4 EDI deprecation === 746 746 747 747 The EDI format for transmission of both structures and data has been deprecated. Version 3.0 is therefore not backwardly compatible with legacy EDI messages. 748 748
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