Changes for page SDMX 3.1 Standards. Section 1. Framework

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@@ -141,12 +141,12 @@
  * Addition of [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] Constraint property to a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]
  * Addition of evolving structure property to a [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]
--* Remove [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] property on [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]]
--* Simplification of [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
++* Remove version property on [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]]
++* Simplification of Constraints
  ** Removal of Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]]
--** Removal of Role, Data [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] only restrict data that can be reported
--** Restrict [[constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] targets to Identifiable structures (not URLs)
--** Addition of Availability [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] to define actual data
++** Removal of Role, Data Constraints only restrict data that can be reported
++** Restrict constraint targets to Identifiable structures (not URLs)
++** Addition of Availability Constraint to define actual data
  (% class="wikigeneratedid" id="HDocumentation" %)
  **Documentation**
@@ -220,9 +220,9 @@
  [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] allows for the publication of statistical data (and the related [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]]) but also provided for the standard, systematic [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]]. In (% style="color:#e74c3c" %)version(%%) 2.1, [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] were reported independent of the statistical data.
--However, in 3.0 [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] associated directly with data such as footnotes are reported as [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] of the [[data set>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]. For other [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]], principally that linked to structures like “[[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]]”, [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] provides reference "[[metadata sets>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]]", "[[metadata structure definitions>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]", and "[[metadata flows>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]]". These objects are very similar to [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]], [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], and [[data flows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]], but concern [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] rather than statistical observations. In the same way that [[data providers>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]] may publish statistical data, they may also publish [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]]. Metadata structural definitions are maintained by agencies in a fashion similar to the way that agencies maintain [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], the structural definitions of [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]].
++However, in 3.0 [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] associated directly with data such as footnotes are reported as [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] of the [[data set>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]. For other [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]], principally that linked to structures like “(% style="color:#e74c3c" %)concepts(%%)”, [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] provides reference "[[metadata sets>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]]", "[[metadata structure definitions>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]", and "[[metadata flows>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]]". These objects are very similar to [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]], [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], and [[data flows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]], but concern [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] rather than statistical observations. In the same way that [[data providers>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]] may publish statistical data, they may also publish [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]]. Metadata structural definitions are maintained by agencies in a fashion similar to the way that agencies maintain [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], the structural definitions of [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]].
--The structural definitions of both data and [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] associate specific statistical [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] with their [[representations>>doc:sdmx:Glossary 2\.1.Representation.WebHome]], whether textual, coded, etc. These [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] are taken from a "[[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]" which is maintained by a specific agency. [[Concept schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] group a set of [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]], provide their definitions and names, and allow for semantic relationships to be expressed, when some [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] are specializations of others. It is possible for a single [[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] to be used both for data structures - key families - and for [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] structures.
++The structural definitions of both data and [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] associate specific statistical (% style="color:#e74c3c" %)concepts(%%) with their [[representations>>doc:sdmx:Glossary 2\.1.Representation.WebHome]], whether textual, coded, etc. These (% style="color:#e74c3c" %)concepts(%%) are taken from a "[[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]" which is maintained by a specific agency. [[Concept schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] group a set of (% style="color:#e74c3c" %)concepts(%%), provide their definitions and names, and allow for semantic relationships to be expressed, when some (% style="color:#e74c3c" %)concepts(%%) are specializations of others. It is possible for a single [[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] to be used both for data structures - key families - and for [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] structures.
  Inherent in any statistical exchange – and in many dissemination activities – is a (% style="color:#e74c3c" %)concept(%%) of "service (% style="color:#e74c3c" %)level(%%) agreement", even if this is not formalized or made explicit. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] incorporates this idea in objects termed "[[provision agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]]". [[Data providers>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]] may provide data to many different [[data flows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. [[Data flows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] may incorporate data coming from more than one [[data provider>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]]. [[Provision agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] are the objects which tell you which [[data providers>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]] are supplying what data to which [[data flows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. Similarly, metadata [[provision agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] for [[metadata flows>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]].
@@ -236,10 +236,11 @@
  * //**Value list:**// Value lists introduced in (% style="color:#e74c3c" %)version(%%) 3.0 are similar to [[codelists>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] with the exception that the items do not need to conform to the usual [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] rules for identifiable objects. That allows the values to include characters such as [[currency>>doc:sdmx:Glossary 2\.1.Currency.WebHome]] symbols (e.g. ¥) which would otherwise make illegal [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]]. However, unlike [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]], values are not individually identifiable. Value lists find application in (% style="color:#e74c3c" %)concepts(%%) and [[data structures definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] for less structured data and microdata enumerations and can be (% style="color:#e74c3c" %)mapped(%%) to other value or [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] lists using [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] (% style="color:#e74c3c" %)maps(%%).
  * //**Organisation Scheme:**// Organisations and organisation structure can be defined in an Organisation Scheme. Specific Organisation Schemes exist for [[Maintenance Agency>>doc:sdmx:Glossary 2\.1.Maintenance agency.WebHome]], [[Data Provider>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]], Metadata Provider, [[Data Consumer>>doc:sdmx:Glossary 2\.1.Data consumer.WebHome]], and Organisation [[Unit>>doc:sdmx:Glossary 2\.1.Statistical unit.WebHome]].
  * //**[[Category Scheme>>doc:sdmx:Glossary 2\.1.Category scheme.WebHome]] and [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]]:**// [[Category schemes>>doc:sdmx:Glossary 2\.1.Category scheme.WebHome]] are made up of a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] of [[categories>>doc:sdmx:Glossary 2\.1.Category.WebHome]], which in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] may include any type of useful [[classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] for the organization of data and metadata. A [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] links a [[category>>doc:sdmx:Glossary 2\.1.Category.WebHome]] to an identifiable object. In this way sets of objects can be categorised. A statistical subjectmatter domain scheme is implemented in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] as a [[Category Scheme>>doc:sdmx:Glossary 2\.1.Category scheme.WebHome]].
--* //**[[Concept Scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]:**// A [[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] is a maintained list of [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] that are used in [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and [[metadata structure definitions>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]. There can be many such [[concept schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]. A “core” [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of the [[concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] can be specified (e.g. a core [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] list, or other [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] such as “date”). Note that this core [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] can be overridden in the [[data structure definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] or [[metadata structure definition>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]] that uses the [[concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]]. Indeed, organisations wishing to remain with version 1.0 key family schema specifications will continue to declare the [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] in the key family definition.
--* //**[[Metadata Set>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]]:**// A [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set is a set of information pertaining to an object within the formal [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] view of statistical exchange: they may describe the maintainers of data or structural definitions; they may describe the schedule on which data is released; they may describe the flow of a single type of data over time; they may describe the quality of data, etc. In [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]], the creators of [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] may take whatever [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] they are concerned with, or obliged to report, and provide a [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set containing that information.
--* //**[[Metadata Structure Definition>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]:**// A [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set also has a set of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]] which describes how it is organized. This [[metadata set>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]] identifies what [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] are being reported, how these [[concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] relate to each other (typically as [[hierarchies>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]), what their presentational structure is, how they may be represented (as free text, as coded values, etc.), and with which formal [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] object types they are associated.
--* //**[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] Definition:**// In [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]], [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] are reported or disseminated according to a [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition. The [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition identifies the [[data structure definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and may be associated with one or more subject matter domains via a [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] (this facilitates the search for data according to organised [[category schemes>>doc:sdmx:Glossary 2\.1.Category scheme.WebHome]]). [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]], in terms of reporting [[periodicity>>doc:sdmx:Glossary 2\.1.Frequency of observation.WebHome]] or sub set of possible keys that are allowed in a [[data set>>doc:sdmx:Glossary 2\.1.Data set.WebHome]], may be attached to the [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition.
++* //**[[Concept Scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]:**// A [[concept scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] is a maintained list of (% style="color:#e74c3c" %)concepts(%%) that are used in [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and [[metadata structure definitions>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]. There can be many such [[concept schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]. A “core” [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of the (% style="color:#e74c3c" %)concept(%%) can be specified (e.g. a core [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] list, or other [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] such as “date”). Note that this core [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] can be overridden in the [[data structure definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] or [[metadata structure definition>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]] that uses the (% style="color:#e74c3c" %)concept(%%). Indeed, organisations wishing to remain with (% style="color:#e74c3c" %)version(%%) 1.0 key family schema specifications will continue to declare the [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] in the key family definition.
++*
++* //**[[Metadata Set>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]]:**// A [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set is a set of information pertaining to an object within the formal [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] view of statistical exchange: they may describe the maintainers of data or structural definitions; they may describe the schedule on which data is released; they may describe the flow of a single type of data over time; they may describe the quality of data, etc. In [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]], the creators of [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] may take whatever (% style="color:#e74c3c" %)concepts(%%) they are concerned with, or obliged to report, and provide a [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set containing that information.
++* //**[[Metadata Structure Definition>>doc:sdmx:Glossary 2\.1.Metadata structure definition.WebHome]]:**// A [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] set also has a set of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]] which describes how it is organized. This [[metadata set>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]] identifies what [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] (% style="color:#e74c3c" %)concepts(%%) are being reported, how these (% style="color:#e74c3c" %)concepts(%%) relate to each other (typically as [[hierarchies>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]), what their presentational structure is, how they may be represented (as free text, as coded values, etc.), and with which formal [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] object types they are associated.
++* //**[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] Definition:**// In [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]], [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] are reported or disseminated according to a [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition. The [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition identifies the [[data structure definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and may be associated with one or more subject matter domains via a [[Categorisation>>doc:sdmx:Glossary 2\.1.Categorisation.WebHome]] (this facilitates the search for data according to organised [[category schemes>>doc:sdmx:Glossary 2\.1.Category scheme.WebHome]]). (% style="color:#e74c3c" %)Constraints(%%), in terms of reporting [[periodicity>>doc:sdmx:Glossary 2\.1.Frequency of observation.WebHome]] or sub set of possible keys that are allowed in a [[data set>>doc:sdmx:Glossary 2\.1.Data set.WebHome]], may be attached to the [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition.
  * //**[[Metadataflow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] Definition:**// A [[metadata flow>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]] definition is very similar to a [[data flow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] definition, but describes, categorises, and constrains [[metadata sets>>doc:sdmx:Glossary 2\.1.Metadata set.WebHome]].
  * //**[[Data Provider>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]]: **//An organization which produces data is termed a [[data provider>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]].
  * //**Metadata Provider: **//An organization which produces [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] is termed a metadata provider.
@@ -295,7 +295,7 @@
  [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] recognizes that statistical data is structured; in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] this structure is termed a [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]. “[[Data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]” are made up of one or more lower-(% style="color:#e74c3c" %)level(%%) “groups”, based on their degrees of similarity. Each group is in turn comprised of one or more “[[series>>doc:sdmx:Glossary 2\.1.Series.WebHome]]” of data. Each [[series>>doc:sdmx:Glossary 2\.1.Series.WebHome]] or section has a “key” - values for each of a cluster of (% style="color:#e74c3c" %)concepts(%%), also called "[[dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]" - which identifies it, and one or more “observations”, which typically combine the time of the observation, and the value of the observation (e.g., measurement). Additionally, metadata may be attached at any (% style="color:#e74c3c" %)level(%%) of this structure as descriptive “[[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]”. [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] lists (enumerations) and other patterns for [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of data and metadata are also modelled.
--There is some similarity between “cube” structures commonly used to process statistical data, and the [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] idea in the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]]. It is important to note that the data as structured according to the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]] is optimized for exchange, potentially with partners who may have no ability to process a “cube” of data coming from complex statistical systems. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[time series>>doc:sdmx:Glossary 2\.1.Series.WebHome]] can be understood as “slices” of the cube. Such a slice is identified by its key. A "[[series>>doc:sdmx:Glossary 2\.1.Series.WebHome]]" key consists of the values for all [[dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] specified by the key family except time. Thus, it is possible to reconstruct and describe data cubes from [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]]-structured data, and to exchange such databases using the interfaces and formats provided for that purpose in the standard. Additional objects such as [[hierarchical code>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] lists, [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] and structure (% style="color:#e74c3c" %)maps(%%) make it possible to more fully model the structure of cubes.
++There is some similarity between “cube” structures commonly used to process statistical data, and the [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] idea in the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]]. It is important to note that the data as structured according to the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]] is optimized for exchange, potentially with partners who may have no ability to process a “cube” of data coming from complex statistical systems. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[time series>>doc:sdmx:Glossary 2\.1.Series.WebHome]] can be understood as “slices” of the cube. Such a slice is identified by its key. A "[[series>>doc:sdmx:Glossary 2\.1.Series.WebHome]]" key consists of the values for all [[dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] specified by the key family except time. Thus, it is possible to reconstruct and describe data cubes from [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]]-structured data, and to exchange such databases using the interfaces and formats provided for that purpose in the standard. Additional objects such as [[hierarchical code>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] lists, (% style="color:#e74c3c" %)constraints(%%) and structure (% style="color:#e74c3c" %)maps(%%) make it possible to more fully model the structure of cubes.
  The information model also provides a view of [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]]: a mechanism for referencing the meaningful “objects” within the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] view of statistical exchange processes ([[data providers>>doc:sdmx:Glossary 2\.1.Data provider.WebHome]], structures, [[provisioning agreements>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]], [[dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]], [[metadata flows>>doc:sdmx:Glossary 2\.1.Metadataflow.WebHome]], etc.) to which metadata is attached; a mechanism for describing a set of meaningful (% style="color:#e74c3c" %)concepts(%%), of organizing them into a presentational structure, and of indicating how their values are represented. This is based on a simple, hierarchical view of [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] which is common to many metadata systems and [[classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]]/categorization schemes. [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] provides a model (and XML and JSON formats) for both describing [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] structures, and of reporting [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] according to those structures.
@@ -314,7 +314,7 @@
  There are four distinct types of message:
--1. //**Structure Definition**~:// For the exchange of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]]. A [[SDMX-ML>>doc:sdmx:Glossary 2\.1.SDMX-ML.WebHome]] structure message can carry details of any number and combination of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]] [[artefacts>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] like DSDs, [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] lists and [[constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
++1. //**Structure Definition**~:// For the exchange of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]]. A [[SDMX-ML>>doc:sdmx:Glossary 2\.1.SDMX-ML.WebHome]] structure message can carry details of any number and combination of [[structural metadata>>doc:sdmx:Glossary 2\.1.Structural metadata.WebHome]] [[artefacts>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] like DSDs, [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] lists and (% style="color:#e74c3c" %)constraints(%%).
 . //**Structure-specific Data**~:// For the exchange of data. This format is specific to the [[Data Structure Definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] of the [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] (in other terms, it is [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]-specific) and is created by following mappings between the metadata constructs defined in the Structure Definition message and the technical specification of the format. It supports the exchange of large [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] in XML format, provides strict validation of conformance with the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] using a generic XML parser, and supports the transmission of partial [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] ([[incremental updates>>doc:sdmx:Glossary 2\.1.Incremental update.WebHome]]) as well as whole [[data sets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]].
  Many XML tools and technologies have expectations about the functions performed by an XML schema, one of which is a very direct relationship between the XML constructs described in the XML schema and the tagged data in the XML instance. Strong data typing is also considered normal, supporting full validation of the tagged data. These message types are designed to support validation and other expected XML schema functions.
@@ -390,7 +390,7 @@
  == 6.4 SDMX Concept Roles ==
--These guidelines define the standard set of [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] (% style="color:#e74c3c" %)Concept(%%) Roles and their use. This set of standard [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] (% style="color:#e74c3c" %)Concepts(%%) are implemented as a [[cross-domain Concept>>doc:sdmx:Glossary 2\.1.Cross-domain concept.WebHome]] Scheme that defines the set of (% style="color:#e74c3c" %)concept(%%) roles and gives examples on (% style="color:#e74c3c" %)concept(%%) role implementation in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 2.0, 2.1 and 3.0. A (% style="color:#e74c3c" %)concept(%%) role gives a particular context to a (% style="color:#e74c3c" %)concept(%%) for easy and systematic interpretation by machine processing and visualization tools. For example, the (% style="color:#e74c3c" %)concepts(%%) REPORTING_AREA and COUNTERPART_AREA are different (% style="color:#e74c3c" %)concepts(%%) but they are both geographical characteristics, therefore they can be associated with the same (% style="color:#e74c3c" %)concept(%%) role ID: "GEO". This allows visualization systems to interpret these (% style="color:#e74c3c" %)concepts(%%) as geographical data in order to generate (% style="color:#e74c3c" %)maps(%%). The implementation of (% style="color:#e74c3c" %)concept(%%) roles is different in [[versions>>doc:sdmx:Glossary 2\.1.Version.WebHome]] 2.0 and 2.1/3.0 of the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] technical standard. Specifically for [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0, this set of roles is considered a normative list that must be interpreted in the same way by all organisations. Additional roles may be provided via the standard roles’ mechanism in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0, i.e., via [[Concept Schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]; the semantics of these roles have to be agreed bilateraly in [[data exchanges>>doc:sdmx:Glossary 2\.1.Data exchange.WebHome]]. The (% style="color:#e74c3c" %)Concept(%%) Roles are available as an [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[Concept Scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] on the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[Global Registry>>doc:sdmx:Glossary 2\.1.Global registry.WebHome]].
++These guidelines define the standard set of [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] (% style="color:#e74c3c" %)Concept(%%) Roles and their use. This set of standard [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] (% style="color:#e74c3c" %)Concepts(%%) are implemented as a [[cross-domain Concept>>doc:sdmx:Glossary 2\.1.Cross-domain concept.WebHome]] Scheme that defines the set of (% style="color:#e74c3c" %)concept(%%) roles and gives examples on (% style="color:#e74c3c" %)concept(%%) role implementation in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 2.0, 2.1 and 3.0. A (% style="color:#e74c3c" %)concept(%%) role gives a particular context to a (% style="color:#e74c3c" %)concept(%%) for easy and systematic interpretation by machine processing and visualization tools. For example, the (% style="color:#e74c3c" %)concepts(%%) REPORTING_AREA and COUNTERPART_AREA are different (% style="color:#e74c3c" %)concepts(%%) but they are both geographical characteristics, therefore they can be associated with the same (% style="color:#e74c3c" %)concept(%%) role ID: "GEO". This allows visualization systems to interpret these (% style="color:#e74c3c" %)concepts(%%) as geographical data in order to generate (% style="color:#e74c3c" %)maps(%%). The implementation of (% style="color:#e74c3c" %)concept(%%) roles is different in (% style="color:#e74c3c" %)versions(%%) 2.0 and 2.1/3.0 of the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] technical standard. Specifically for [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0, this set of roles is considered a normative list that must be interpreted in the same way by all organisations. Additional roles may be provided via the standard roles’ mechanism in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0, i.e., via [[Concept Schemes>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]]; the semantics of these roles have to be agreed bilateraly in [[data exchanges>>doc:sdmx:Glossary 2\.1.Data exchange.WebHome]]. The (% style="color:#e74c3c" %)Concept(%%) Roles are available as an [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[Concept Scheme>>doc:sdmx:Glossary 2\.1.Concept scheme.WebHome]] on the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[Global Registry>>doc:sdmx:Glossary 2\.1.Global registry.WebHome]].
  = 7 Validation and Transformation Language =