Changes for page Part IV. Data and Metadata Namespaces

Last modified by Artur on 2025/09/10 11:19

From 4.3 to 4.4 From 4.7 to 5.1

From version 4.4

edited by Helena
on 2025/06/24 14:50

Change comment: There is no comment for this version

To version 4.7

edited by Helena
on 2025/06/24 14:59

Change comment: There is no comment for this version

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@@ -389,20 +389,16 @@
  **//ObsType//: **ObsType is the abstract type which defines the structure of a grouped or un-grouped observation. The observation must be provided a key, which is either a value for the dimension which is declared to be at the observation level if the observation is grouped, or a full set of values for all dimensions in the data structure definition if the observation is un-grouped. This key should disambiguate the observation within the context in which it is defined (e.g. there should not be another observation with the same dimension value in a series). The observation can contain an observed value and/or attribute values. Data structure definition schemas will drive a type or types based on this that is specific to the data structure definition and the variation of the format being expressed in the schema. The dimension value(s) which make up the key and the attribute values associated with the key dimension(s) or the primary measure will be represented with XML attributes. This is specified in the content model with the declaration of anyAttributes in the "local" namespace. The derived observation type will refine this structure so that the attributes are explicit. The XML attributes will be given a name based on the attribute's identifier. These XML attributes will be unqualified (meaning they do not have a namespace associated with them). The dimension XML attribute(s) will be required while the attribute XML attributes will be optional. To allow for generic processing, it is required that the only unqualified XML attributes in the derived observation type be for the observation dimension(s) and attributes declared in the data structure definition. If additional attributes are required, these should be qualified with a namespace so that a generic application can easily distinguish them as not being meant to represent a data structure definition dimension or attribute. If the data structure definition specific schema requires that explicit measures be used (only possible when the measure dimension is specified at the observation), then there will be types derived for each measure defined by the measure dimension. In this case, the types will be specific to each measure, which is to say that the representation of the primary measure (i.e. the observed value) will be restricted to that which is specified by the specific measure.
  Derivation:
++* //com:AnnotableType// (extension)
++** //ObsType//
--//com:AnnotableType// (extension)
--   //ObsType//
--
  Attributes:
--
  type?, TIME_PERIOD?, REPORTING_YEAR_START_DAY?, OBS_VALUE?
  Content:
--
  com:Annotations?
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |type|com:IDType|The type attribute is used when the derived format requires that explicit measure be used. In this case, the derived type based on the measure will fix this value to be the identification of the measure concept. This will not be required, but since it is fixed it will be available in the post validation information set which will allow for generic processing of the data. If explicit measures are not used, then the derived type will prohibit the use of this attribute.
  |TIME_PERIOD|com: ObservationalTimePer iodType|The TIME_PERIOD attribute is an explicit attribute for the time dimension. This is declared in the base schema since it has a fixed identifier and representation. The derived series type will either require or prohibit this attribute, depending on whether time is the observation dimension. If the time dimension specifies a more specific representation of time the derived type will restrict the type definition to the appropriate type.
@@ -417,21 +417,17 @@
  **//TimeSeriesDataSetType//: **TimeSeriesDataSetType is the abstract type which defines the base structure for any data structure definition specific time series based data set. A derived data set type will be created that is specific to a data structure definition. Unlike the base format, only one variation of this is allowed for a data structure definition. This variation is the time dimension as the observation dimension. Data is organised into a collection of time series. Because this derivation is achieved using restriction, data sets conforming to this type will inherently conform to the base data set structure as well. In fact, data structure specific here will be identical to data in the base data set when the time dimension is the observation dimension, even for the derived data set types. This means that the data contained in this structure can be processed in exactly the same manner as the base structure. The same rules for derivation as the base data set type apply to this specialized data set.
  Derivation:
++* //com:AnnotableType// (extension)
++** //DataSetType// (restriction)
++*** //TimeSeriesDataSetType//
--//com:AnnotableType// (extension)
--   //DataSetType// (restriction)
--         //TimeSeriesDataSetType//
--
  Attributes:
--
  structureRef, setID?, action?, reportingBeginDate?, reportingEndDate?, validFromDate?, validToDate?, publicationYear?, publicationPeriod?, dataScope, REPORTING_YEAR_START_DAY?
  Content:
--
  com:Annotations?, DataProvider?, Group*, Series*
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |structureRef|xs:IDREF|The structureRef contains a reference to a structural specification in the header of a data or reference metadata message. The structural specification details which structure the data or reference metadata conforms to, as well as providing additional information such as how the data is structure (e.g. which dimension occurs at the observation level for a data set).
  |setID|com:IDType|The setID provides an identification of the data or metadata set.
@@ -456,21 +456,17 @@
  **TimeSeriesType: **TimeSeriesType defines an abstract structure which is used to group a collection of observations which have a key in common, organised by time. The key for a series is every dimension defined in the data structure definition, save the time dimension. In addition to observations, values can be provided for attributes which are associated with the dimensions which make up this series key (so long as the attributes do not specify a group attachment or also have an relationship with the time dimension). It is possible for the series to contain only observations or only attribute values, or both. The same rules for derivation as the base series type apply to this specialized series.
  Derivation:
++* //com:AnnotableType// (extension)
++** //SeriesType// (restriction)
++*** TimeSeriesType
--//com:AnnotableType// (extension)
--   //SeriesType// (restriction)
--         TimeSeriesType
--
  Attributes:
--
  REPORTING_YEAR_START_DAY?
  Content:
--
  com:Annotations?, Obs*
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |REPORTING_YEAR_START_DAY|xs:gMonthDay|The REPORTING_YEAR_START_DAY attribute is an explict attribute for the reporting year start day, which provides context to the time dimension when its value contains a reporting period (e.g. 2010-Q1). This attribute is used to state the month and day that the reporting year begins (e.g. ~-~-07-01 for July 1st). In the absence of an explicit value provided in this attribute, all reporting period values will be assumed to be based on a reporting year start day of January 1. This is declared in the base schema since it has a fixed identifier and representation. The derived series type may either require or prohibit this attribute, depending on whether the data structure declared the reporting year start day attribute and if so, the attribute relationship and assignment status assigned to it.
@@ -483,21 +483,17 @@
  **//TimeSeriesObsType//: **TimeSeriesObsType defines the abstract structure of a time series observation. The observation must be provided a value for the time dimension. This time value should disambiguate the observation within the series in which it is defined (i.e. there should not be another observation with the same time value). The observation can contain an observed value and/or attribute values. The same rules for derivation as the base observation type apply to this specialized observation.
  Derivation:
++* //com:AnnotableType// (extension)
++** //ObsType// (restriction)
++*** //TimeSeriesObsType//
--//com:AnnotableType// (extension)
--   //ObsType// (restriction)
--         //TimeSeriesObsType//
--
  Attributes:
--
  TIME_PERIOD, REPORTING_YEAR_START_DAY?, OBS_VALUE?
  Content:
--
  com:Annotations?
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |TIME_PERIOD|com: ObservationalTimePer iodType|The TIME_PERIOD attribute is an explicit attribute for the time dimension. This is declared in the base schema since it has a fixed identifier and representation. Since this data is structured to be time series only, this attribute is always required. If the time dimension specifies a more specific representation of time the derived type will restrict the type definition to the appropriate type.
  |REPORTING_YEAR_START_DAY|xs:gMonthDay|The REPORTING_YEAR_START_DAY attribute is an explict attribute for the reporting year start day, which provides context to the time dimension when its value contains a reporting period (e.g. 2010-Q1). This attribute is used to state the month and day that the reporting year begins (e.g. ~-~-07-01 for July 1st). In the absence of an explicit value provided in this attribute, all reporting period values will be assumed to be based on a reporting year start day of January 1. This is declared in the base schema since it has a fixed identifier and representation. The derived observation type may either require or prohibit this attribute, depending on whether the data structure declared the reporting year start day attribute and if so, the attribute relationship and assignment status assigned to it.
@@ -504,13 +504,10 @@
  |OBS_VALUE|xs:anySimpleType|The OBS_VALUE attribute is an explicit attribute for the primary measure, which is intended to hold the value for the observation. This is declared in the base schema since it has a fixed identifier. This attribute is un-typed, since the representation of the observed value can vary widely. Derived types will restrict this to be a type based on the representation of the primary measure. In the case that an explicit measure is used, the derived type for a given measure might further restrict the type of the primary measure to be more specific to the core representation for the measure concept. Note that it is required that in the case of multiple measures being used, that the representation of the primary measure is broad enough to handle the various representations of the measure concepts.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |com:Annotations|com:AnnotationsType|Annotations is a reusable element the provides for a collection of annotations. It has been made global so that restrictions of types that extend AnnotatableType my reference it.
--1.
--11.
--111. Simple Types
++=== Simple Types ===
  **DataScopeType: **DataScopeType is an enumeration of the possible validity scopes for a data set. These scopes indicate the level at which the data is stated to be valid.
@@ -517,7 +517,6 @@
  Derived by restriction of xs:string .
  Enumerations:
--
  |**Value**|**Documentation**
  |DataStructure|The data set conforms simply to the data structure definition as it is defined, without regard to any constraints.
  |ConstrainedDataStructure|The data set conforms to the known allowable content constraints applied to the data structure definition.
@@ -524,46 +524,35 @@
  |Dataflow|The data set conforms to the known allowable content constraints applied to the dataflow.
  |ProvisionAgreement|The data set conforms to the known allowable content constraints applied to the provision agreement.
--1.
--11. Generic Metadata Namespace
++== Generic Metadata Namespace ==
  **http:~/~/www.sdmx.org/resources/sdmxml/schemas/v2_1/metadata/generic**
--1.
--11.
--111. Summary
++=== Summary ===
  Referenced Namespaces:
--
  |**Namespace**|**Prefix**
  |http:~/~/www.sdmx.org/resources/sdmxml/schemas/v2_1/common|com
  |http:~/~/www.w3.org/2001/XMLSchema|xs
  Contents:
--
 Complex Types
--1.
--11.
--111. Complex Types
++=== Complex Types ===
  **MetadataSetType: **MetadataSetType describes the structure for a metadata set, which contains a collection of reported metadata against a set of values for a given full or partial target identifier, as described in a metadata structure definition. The metadata set may contain reported metadata for multiple report structures defined in a metadata structure definition.
  Derivation:
++* //com:AnnotableType// (extension)
++** MetadataSetType
--//com:AnnotableType// (extension)
--   MetadataSetType
--
  Attributes:
--
  structureRef, setID?, action?, reportingBeginDate?, reportingEndDate?, validFromDate?, validToDate?, publicationYear?, publicationPeriod?
  Content:
--
  com:Annotations?, com:Name*, DataProvider?, Report+
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |structureRef|xs:IDREF|The structureRef contains a reference to a structural specification in the header of a data or reference metadata message. The structural specification details which structure the data or reference metadata conforms to, as well as providing additional information such as how the data is structure (e.g. which dimension occurs at the observation level for a data set).
  |setID|com:IDType|The setID provides an identification of the data or metadata set.
@@ -586,20 +586,16 @@
  **ReportType: **ReportType contains a set of report attributes and identifies a target objects] to which they apply.
  Derivation:
++* //com:AnnotableType// (extension)
++** ReportType
--//com:AnnotableType// (extension)
--   ReportType
--
  Attributes:
--
  id
  Content:
--
  com:Annotations?, Target, AttributeSet
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the report structure as defined in the metadata structure definition. This identifies the report structure which defines the structure of metadata that is being reported.
@@ -613,20 +613,16 @@
  **TargetType: **TargetType defines the structure of a target. It contains a set of target reference values which when taken together, identify the object or objects to which the reported metadata apply.
  Attributes:
--
  id
  Content:
--
  ReferenceValue+
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the metadata target as defined in the metadata structure definition. This identifies the metadata target of the report structure that identifies the target object(s) of the reported metadata.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |ReferenceValue|ReferenceValueType|ReferenceValue contains a value for a target reference object reference. When this is taken with its sibling elements, they identify the object or objects to which the reported metadata apply. The content of this will either be a reference to an identifiable object, a data key, a reference to a data set, or a report period.
@@ -633,20 +633,16 @@
  **ReferenceValueType: **ReferenceValueType defines the structure of a target object reference value. A target reference value will either be a reference to an identifiable object, a data key, a reference to a data set, or a report period.
  Attributes:
--
  id
  Content:
--
  (ObjectReference | DataKey | DataSetReference | ConstraintContentReference | ReportPeriod)
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the target reference object as defined in the metadata structure definition. This identifies the target reference of the metadata target that identifes one of the target references, that when taken together, identify the target of the reported metadata.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |ObjectReference|com: ObjectReferenceType|ObjectReference provides a reference to an identifiable object in the SDMX information model. An identifiable object target will utilize this option as the representation of the target reference value.
  |DataKey|com:DataKeyType|ObjectReference provides a set of dimension references and values for those dimension for the purpose of reporting metadata against a set of data. A key descriptor values target will utilize this option as the representation of the target reference value.
@@ -657,11 +657,9 @@
  **AttributeSetType: **AttributeSetType defines the structure for a collection of reported metadata attributes.
  Content:
--
  ReportedAttribute+
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |ReportedAttribute|ReportedAttributeTyp e|ReportedAttribute provides the details of a reported attribute, including a value and/or child reported attributes.
@@ -668,26 +668,21 @@
  **ReportedAttributeType: **ReportedAttributeType defines the structure for a reported metadata attribute. A value for the attribute can be supplied as either a single value, or multi-lingual text values (either structured or unstructured). An optional set of child metadata attributes is also available if the metadata attribute definition defines nested metadata attributes.
  Derivation:
++* //com:AnnotableType// (extension)
++** ReportedAttributeType
--//com:AnnotableType// (extension)
--   ReportedAttributeType
--
  Attributes:
--
  id, value?
  Content:
--
  com:Annotations?, (com:Text+ | com:StructuredText+)?, AttributeSet?
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute identifies the metadata attribute that the value is being reported for.
  |value|xs:string|The value attribute holds any simple value for the metadata attribute.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |com:Annotations|com:AnnotationsType|Annotations is a reusable element the provides for a collection of annotations. It has been made global so that restrictions of types that extend AnnotatableType my reference it.
  |com:Text|com:TextType|Text is used to supply parallel multi-lingual textual values for the reported metadata attribute. This will be used if the text format of the metadata attribute has a type of string and the multi-lingual value is set to true.
@@ -694,14 +694,11 @@
  |com:StructuredText|com:XHTMLType|StructuredText is used to supply parallel multi-lingual structured (as XHTML) textual values for the reported metadata attribute. This will be used if the text format of the metadata attribute has a type of XHTML and the multi-lingual value is set to true.
  |AttributeSet|AttributeSetType|AttributeSet contains the reported metadata attribute values for the child metadata attributes.
--1.
--11. Structure Specific Metadata Namespace
++== Structure Specific Metadata Namespace ==
  **http:~/~/www.sdmx.org/resources/sdmxml/schemas/v2_1/metadata/structurespecific**
--1.
--11.
--111. Summary
++=== Summary ===
  Referenced Namespaces:
@@ -711,30 +711,23 @@
  |http:~/~/www.w3.org/2001/XMLSchema|xs
  Contents:
--
 Complex Types
--1.
--11.
--111. Complex Types
++=== Complex Types ===
  **//MetadataSetType//: **MetadataSetType is an abstract base type the forms the basis for a metadata structure specific metadata set. It is restricted by the metadata structure definition specific schema to meet its needs.
  Derivation:
++* //com:AnnotableType// (extension)
++** //MetadataSetType//
--//com:AnnotableType// (extension)
--   //MetadataSetType//
--
  Attributes:
--
  structureRef, setID?, action?, reportingBeginDate?, reportingEndDate?, validFromDate?, validToDate?, publicationYear?, publicationPeriod?
  Content:
--
  com:Annotations?, com:Name*, DataProvider?, Report+
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |structureRef|xs:IDREF|The structureRef contains a reference to a structural specification in the header of a data or reference metadata message. The structural specification details which structure the data or reference metadata conforms to, as well as providing additional information such as how the data is structure (e.g. which dimension occurs at the observation level for a data set).
  |setID|com:IDType|The setID provides an identification of the data or metadata set.
@@ -747,7 +747,6 @@
  |publicationPeriod|com: ObservationalTimePer iodType|The publicationPeriod specifies the period of publication of the data or metadata in terms of whatever provisioning agreements might be in force (i.e., "Q1 2005" if that is the time of publication for a data set published on a quarterly basis).
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |com:Annotations|com:AnnotationsType|Annotations is a reusable element the provides for a collection of annotations. It has been made global so that restrictions of types that extend AnnotatableType my reference it.
  |com:Name|com:TextType|Name is a reusable element, used for providing a human-readable name for an object.
@@ -757,25 +757,20 @@
  **//ReportType//: **ReportType is an abstract base type the forms the basis for a metadata structure definition specific report, based on the defined report structures. This type is restricted in the metadata structure definition specific schema so that the Target and AttributeSet conform to the prescribed report structure.
  Derivation:
++* //com:AnnotableType// (extension)
++** //ReportType//
--//com:AnnotableType// (extension)
--   //ReportType//
--
  Attributes:
--
  id?
  Content:
--
  com:Annotations?, Target, AttributeSet
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the report structure as defined in the metadata structure definition. This identifies the report structure which defines the structure of metadata that is being reported. This is optional and not expected to be supplied as the metadata structure definition specific schema will specify a fixed value such that the reference to the report structure will always be available if required for processing.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |com:Annotations|com:AnnotationsType|Annotations is a reusable element the provides for a collection of annotations. It has been made global so that restrictions of types that extend AnnotatableType my reference it.
  |Target|//TargetType//|Target contains a set of target reference values which when taken together, identify the object or objects to which the reported metadata apply. This element is unqualified so that the metadata structure definition specific schema can refine the type of the element such that the references values can be validated against those defined in the metadata targets for the report structure.
@@ -784,20 +784,16 @@
  **//TargetType//: **TargetType is an abstract base type that forms the basis of a the metadata report's metadata target value. This type is restricted in the metadata structure definition specific schema so that the ReferenceValue elements conform to the targets specified in the metadata target defined in the metadata structure definition.
  Attributes:
--
  id?
  Content:
--
  ReferenceValue+
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the metadata target as defined in the metadata structure definition. This identifies the metadata target of the report structure that identifies the target object(s) of the reported metadata. This is optional and not expected to be supplied as the metadata structure definition specific schema will specify a fixed value such that the reference to the metadata target will always be available if required for processing.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |ReferenceValue|//ReferenceValueType//|ReferenceValue contains a value for a target reference. When this is taken with its sibling elements, they identify the object or objects to which the reported metadata apply. The content of this will either be a reference to an identifiable object, a data key, a reference to a data set, or a report period. This element is unqualified so that the metadata structure definition specific schema can refine the type of the element such that value can be validated against the format defined in the metadata structure definition.
@@ -804,20 +804,16 @@
  **//ReferenceValueType//: **ReferenceValueType is an abstract base type that forms the basis of a target reference value. A target reference value will either be a reference to an identifiable object, a data key, a reference to a data set, or a report period. The choice of these options will be refined to only one according to the definition of the target in the metadata structure definition.
  Attributes:
--
  id?
  Content:
--
  (ObjectReference | DataKey | DataSetReference | ConstraintContentReference | ReportPeriod)
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute holds the identifier of the target reference object reference as defined in the metadata structure definition. This identifies the target reference of the metadata target that identifes one of the target references, that when taken together, identify the target of the reported metadata. This is optional and not expected to be supplied as the metadata structure definition specific schema will specify a fixed value such that the reference to the target object definition will always be available if required for processing.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |ObjectReference|//com:ReferenceType//|ObjectReference provides a reference to an identifiable object in the SDMX information model. An identifiable object target will utilize this option as the representation of the target reference value. This element is unqualified so that the metadata structure definition specific schema can refine the type of the element such that the type of reference is valid according to the object type specified in the identifiable object target in the metadata structure definition. At the very least, the reference will be specific to the type of object being referenced so that a complete set of reference fields must be provided. In cases where an item object is restricted to be from a particular scheme, this type will be further restricted so that only a valid item reference can be supplied. The structure of this reference is such that it can be generically processed without needing to know what the intended target object type is prior to processing, as this information is part of the reference.
  |DataKey|com:DataKeyType|ObjectReference provides a set of dimension references and values for those dimension for the purpose of reporting metadata against a set of data. A key descriptor values target will utilize this option as the representation of the target reference value. It is not expect that the metadata structure definition specific schema would refine this, but none the less, it is an unqualified element.
@@ -828,20 +828,16 @@
  **//ReportedAttributeType//: **ReportedAttributeType is an abstract base type that forms the basis for a metadata structure specific metadata attribute. A value for the attribute can be supplied as either a single value, or multi-lingual text values (either structured or unstructured). An optional set of child metadata attributes is also available if the metadata attribute definition defines nested metadata attributes. The metadata structure definition specific schema will refine this type for each metadata attribute such that the content can be validation against what is defined in the metadata structure definition.
  Derivation:
++* //com:AnnotableType// (extension)
++** //ReportedAttributeType//
--//com:AnnotableType// (extension)
--   //ReportedAttributeType//
--
  Attributes:
--
  id?, value?, isMetadataAttribute?
  Content:
--
  com:Annotations?, (com:Text+ | com:StructuredText+)?, AttributeSet?
  Attribute Documentation:
--
  |**Name**|**Type**|**Documentation**
  |id|com:IDType|The id attribute identifies the metadata attribute that the value is being reported for. This is optional and not expected to be supplied as the metadata structure definition specific schema will specify a fixed value such that the reference to the metadata attribute will always be available if required for processing.
  |value|xs:anySimpleType|The value attribute holds any simple value for the metadata attribute. This attribute is un-typed such that the metadata structure definition specific schema can specify any simple type according the text format / local representation defined by the metadata structure definition.
@@ -848,7 +848,6 @@
  |isMetadataAttribute (fixed: true)|xs:boolean|The isMetadataAttribute attribute is a fixed boolean (true) and is intended to designate to processing applications that a given element represents a reported attribute. This attribute is qualified (meaning that it will be qualified in an instance with the target namespace) to ensure that it can be properly identified by applications. The purpose of this is to allow applications to identify elements with unknown names as reported attributes so that they may process a metadata structure definition specific instance without knowledge of the underlying metadata structure definition.
  Element Documentation:
--
  |**Name**|**Type**|**Documentation**
  |com:Annotations|com:AnnotationsType|Annotations is a reusable element the provides for a collection of annotations. It has been made global so that restrictions of types that extend AnnotatableType my reference it.
  |com:Text|com:TextType|Text is used to supply parallel multi-lingual textual values for the reported metadata attribute. This will be used if the text format of the metadata attribute has a type of string and the multi-lingual value is set to true.
@@ -855,9 +855,10 @@
  |com:StructuredText|com:XHTMLType|StructuredText is used to supply parallel multi-lingual structured (as XHTML) textual values for the reported metadata attribute. This will be used if the text format of the metadata attribute has a type of XHTML and the multi-lingual value is set to true. If the multi-lingual flag is not set to true, it is expected that the maximum occurrence of this will be refined to be 1 in the metadata structure definition specific schema.
  |AttributeSet|xs:anyType|AttributeSet contains the reported metadata attribute values for the child metadata attributes. This element is unqualified and un-typed so that it can refined by the metadata structure definition specific schema to validate that the reported metadata attributes conform to those prescribed by the metadata attribute definition. The content of this must be element only, and these elements must always represent a reported attribute. Since this can not be strictly enforced in XML Schema, additional steps have been added to make generic processing of this element simpler. When processing this element, any element found with the attribute isMetadataAttribute in this target namespace is assumed to be a reported metadata attribute and can be processed as such.
--1. Mapping to Structure-Specific Schemas
--11. General
++= Mapping to Structure-Specific Schemas =
++== General ==
++
  Data structure and metadata structure-specific schemas are each based on one single core construct found in their respective structure-specific namespaces;
  Data  - http:~/~/www.SDMX.org/resources/SDMXML/schemas/v2_1/data/structurespecific
@@ -866,9 +866,7 @@
  For a metadata structure, only a single schema will be created for the entire structure definition. For data structures, many variations of the base schema are possible, each specific as to how the data is organised. This will be discussed in more details in the specific rules for the data structure schemas.
--1.
--11.
--111. Basic Terminology
++=== Basic Terminology ===
  In the subsequent sections, the following namespace prefixes are used:
@@ -914,8 +914,7 @@
  **XML Attribute:** Refers to the definition of an XML attribute for a complex type (i.e. and xs:attribute element in a xs:complexType element). An attribute must define a name and type (name and type attributes) and may also specify a usage (use attribute).
--1.
--11. Namespace Rules
++== Namespace Rules ==
  Each format specific schema will specify its namespace in the target namespace of the schema (the targetNamespace attribute of the schema). This document also assumes that the root namespace (that which is defined by the xmlns attribute) of the schema will be the same as the target namespace. Therefore any types or global elements referenced in these descriptions without a namespace prefix are assumed to be in the format specific namespace.
@@ -923,21 +923,17 @@
  For the purpose of the descriptions here, the default element form for the schema (as specified in the elementFormDefault attribute of the schema) is “qualified", and the default attribute form (as specified in the attributeFormDefault attribute of the schema) is "unqualified".
--1.
--11. General Rules
++== General Rules ==
  The following section details the general rules which apply to all structure specific schema creation.
--1.
--11.
--111. Component Name Determination
++=== Component Name Determination ===
  When required to create an XML element or attribute, the name for a component is always its identifier. However, the identifier may be inherited. Therefore, the general rules is as follows:
--1. If the component defines an identifier, the element or attribute name is the value of that identifier
--1. Otherwise, the element or attribute name is the identifier of the concept from which it takes its semantic (Note that this is technically the component identifer).
--11.
--111. Representation Determination
++If the component defines an identifier, the element or attribute name is the value of that identifier
++Otherwise, the element or attribute name is the identifier of the concept from which it takes its semantic (Note that this is technically the component identifer).
++Representation Determination
  Every component has a representation associated with it, whether it is defined as a local representation in the component definition, or it is inherited from the concept from which the component takes it semantic (as defined in the concept identity of the component).
@@ -951,40 +951,27 @@
  A text format consists of a data type and an optional collection of facets. It is the combination of these which determine the exact nature of the component representation. An enumeration consists of a reference to an item scheme, for which an enumerated list of possible values can be created.
--1.
--11.
--111. Simple / Primitive Type Determination
++=== Simple / Primitive Type Determination ===
  For any given representation, there exist rules for determining the simple or primitive type which should be used to validate the value. There are no specific requirements to how a simple type is named or if it is referenced or used as an anonymous type. This section simply serves to state the requirements of the type for a component based on its [[determined representation>>path:#_Representation_Determination:]].
  For example, a dimension may inherit its representation for a concept, and the data type of a representation data type may be a String. The simplest solution would be to use the xs:string primitive type. However, an implementer may have chosen to generate simple types for all concepts to avoid having to look up the concept core representation for very component. In this case, the type may be given a name based on the concept and be a simple derivation from the xs:string type that places no further restrictions. The result would be that the type that is actually used for the dimension, although named after the concept, is effectively the required xs:string. These rules are meant to allow such flexibility in how types are created. The only requirement is that the type meet the requirements stated here.
--1.
--11.
--111. Representation with Enumeration
++=== Representation with Enumeration ===
  A representation which defines an enumeration will result in a simple type that is a restriction of the common:IDType. The simple type will define enumerations for each item in the item scheme. The value for these enumerations will be identifier of the item. If desired, the names of the item may be placed in the documentation of the enumeration, but this is not required. Example:
--<xs:simpleType name="ESTAT.CL_COUNTRY.1.0">
++> <xs:simpleType name="ESTAT.CL_COUNTRY.1.0">
++> <xs:restriction base="common:IDType">
++> <xs:enumeration value="BE">
++> <xs:annotation>
++> <xs:documentation xml:lang="en">Belgium</xs:documentation>
++> </xs:annotation>
++> </xs:enumeration>
--<xs:restriction base="common:IDType">
++=== Representation with Text Format ===
--<xs:enumeration value="BE">
--
--<xs:annotation>
--
--<xs:documentation xml:lang="en">Belgium</xs:documentation>
--
--</xs:annotation>
--
--</xs:enumeration>
--
--
--1.
--11.
--111. Representation with Text Format
--
  A representation which defines a text format will result in a simple type or primitive type. The first step is to determine the base type from the text format data type:
  |**SDMX Data Type**|**XML Schema Data Type**
@@ -1045,9 +1045,7 @@
  Any other facets are informational only, and will not affect the determined type.
--1.
--11.
--111. //Type Names//
++=== Type Names ===
  These rules will only dictate type names where absolutely necessary. In all other cases, it is the decision of the implementer as to how to name or use the type. It is also the implementer's requirement to ensure that any type name is properly unique within its scope. To assist in this, the following recommendations are offered for naming types such that they are unique.
@@ -1074,16 +1074,13 @@
  Only the constructs that will be detailed in the data and metadata structure-specific rules below are required to be in the specified target namespace of the structure-specific schema. So long as any other generated type conforms to the rules specified, it may exist in any namespace.
--1.
--11. Data Structure Specific Schema
++== Data Structure Specific Schema ==
  Separate schemas will be created for the data structure depending on which dimension occurs at the observation level, and whether explicit measures are used in the case that the observation dimension is the measure dimension. The recommended target namespace of the data structured specific schema is: [Data Structure URN]:ObsLevelDim:[Observation Dimensions](:explicit)?. Note that the explicit trailer is only used when the measure dimension is used at the observation level and the explicit measure concepts are to be used.
  The rules for generating the data structure specific-schema are broken into sections based on the level within the structure (i.e. data set, group, series, observation). Each section will state the rules for each variation of the structure specific format.
--1.
--11.
--111. DataSetType
++=== DataSetType ===
  A complex type named DataSetType must be created. Its content model will be derived via restriction. If the dimension at the observation level is the time dimension (TIME_PERIOD) the base type of the restriction is dsd:TimeSeriesDataSetType. Otherwise, the base type of the restriction is dsd:DataSetType. The complex type content model will be as follows:
@@ -1097,8 +1097,9 @@
 . If the reporting year start day attribute is not declared in the data structure definition or if it is declared but does not declare an attribute relationship of None, an attribute named REPORTING_YEAR_START_DAY with a type of xs:gMonthDay and a usage of prohibited
 . An attribute for each attribute defined in the data structured definition that declares an attribute relationship of None. The XML attribute [[name>>path:#_Component_Name_Determination]] and [[type>>path:#_Simple_/_Primitive]] are defined according to the general rules defined in the previous section, and the usage is optional
 .
--111. GroupType
++=== GroupType ===
++
  If the data structure definition defines only one group, a complex type with its name taken from the identifier of the lone group must be defined. This type is used for the Group element in the DataSetType. Its content model will be derived via restriction of the dsd:GroupType. The complex type content model will be as follows:
 . A sequence consisting of:
@@ -1125,9 +1125,9 @@
 . If the reporting year start day attribute is not declared in the data structure definition or if it is declared but does not declare an attribute relationship with the group and does not specify the group as an attachment group, an attribute named REPORTING_YEAR_START_DAY with a type of xs:gMonthDay and a usage of prohibited
 . An attribute for each attribute defined in the data structure that declares an attribute relationship with the group or specifies the group as an attachment group. The XML attribute [[name>>path:#_Component_Name_Determination]] and [[type>>path:#_Simple_/_Primitive]] are defined according to the general rules defined in the previous section, and the usage is optional
 . An attribute named type with a type of Group.ID, usage of optional, and a fixed value of the identifier of the group
--11.
--111. SeriesType
++=== SeriesType ===
++
  If the dimension at the observation is not AllDimensions, a complex type name SeriesType must be created. Its content model will be derived via restriction. If the dimension at the observation level is the time dimension (TIME_PERIOD) the base type of the restriction is dsd:TimeSeriesType. Otherwise, the base type of the restriction is dsd:SeriesType. The complex type content model will be as follows:
 . A sequence consisting of:
@@ -1136,9 +1136,9 @@
 . An attribute for each dimension defined by the data structure definition, except for the dimension at the observation level. The XML attribute [[name>>path:#_Component_Name_Determination]] and [[type>>path:#_Simple_/_Primitive]] are defined according to the general rules defined in the previous section, and the usage is required
 . If the reporting year start day attribute is not declared in the data structure definition or if it is declared and declares an attribute relationship of None, or with a group, or the dimension at the observation level, or specifies a group as an attachment group, an attribute named REPORTING_YEAR_START_DAY with a type of xs:gMonthDay and a usage of prohibited
 . An attribute for each attribute defined in the data structure that declares an attribute relationship with any dimension outside of the dimension at the observation level (so long as it does not also declare an attachment group). The XML attribute [[name>>path:#_Component_Name_Determination]] and [[type>>path:#_Simple_/_Primitive]] are defined according to the general rules defined in the previous section, and the usage is optional
--11.
--111. ObsType
++=== ObsType ===
++
  A complex type name ObsType must be created. Its content model will be derived via restriction. If the dimension at the observation level is the time dimension (TIME_PERIOD) the base type of the restriction is dsd:TimeSeriesObsType. Otherwise, the base type of the restriction is dsd:ObsType. If the explicit measure option is used, this complex type must be abstract. The complex type content model will be as follows:
 . A sequence consisting of:
@@ -1161,9 +1161,7 @@
  The rules for generating the data structure specific-schema are broken into sections based on the level within the structure (i.e. metadata set, metadata targets, reports, metadata attributes). These rules will recommend names for generated types, and will refer back to these names throughout the description. These names are simply recommendations that should produce a unique name, but there is no requirement to use them. When a name is required, it will be made clear this is the case.
--1.
--11.
--111. MetadataSetType
++=== MetadataSetType ===
  A complex type that must be named MetadataSetType must be created. Its content model will be derived via restriction of the base type, msd:MetadataSetType. The complex type content model will be as follows:
@@ -1215,9 +1215,10 @@
 . A local element named Ref, with a form of unqualified and a the type defined above as is [metadata target].[target object].Ref
 . A local element named URN, with a form of unqualified, a minimum occurrence of 0, and the type defined above as [item scheme agency].[item scheme identifier].[item scheme version].URN
 . A local element named URN, with a form of unqualified, and the type defined above as [item scheme agency].[item scheme identifier].[item scheme version].URN
--111.
--1111. Identifiable Object Target Type Determination
++
++==== Identifiable Object Target Type Determination ====
++
  An identifiable object target is meant to reference an SDMX identifiable object. In the metadata structure specific schema, the complex type which defines the reference is restricted according to the local representation and object type of the identifiable object target. If the identifiable object target does not provide an enumeration in its local representation, then the complex type for the target object is the specific reference type from the common namespace, based on the object type defined by the target object. For example, if the object type is DataProivder, the type will be common:DataProviderReferenceType. The general rule for the name of this type is common:[object type]ReferenceType.
  If the target object defines an enumeration in its local representation, then the declared object type must be for the items contained the enumeration's referenced item scheme. If this is not true, the reference type as defined above is the type for the target object.
@@ -1234,9 +1234,9 @@
 . An attribute named maintinableParentID with a type of common:IDType, a use of required, and a fixed value of the identifier of the item scheme referenced from the enumeration
 . An attribute named maintainableParentVersion with a type of common:VersionType, a use of optional, and a fixed value of the version of the item scheme referenced from the enumeration
 . An attribute named id, with a use of option, and the type defined above as [item scheme agency].[item scheme identifier].[item scheme version].ID.
--11.
--111. ReportType
++=== ReportType ===
++
  A simple type with a recommend name of Report.ID must be created. This must restrict the common:IDType. For each report structure defined by the metadata structure definition, an enumeration will be created within the restriction with a value of the report structure identifier.
  An abstract complex type with a recommended name of ReportType must be created. Its content model will be derived via restriction of the msd:ReportType. The complex type content model will be as follows:
@@ -1284,17 +1284,16 @@
 .
 . A local element named AttributeSet with a form of unqualified and a type as defined according to the rules defined in Attribute Set Complex Type Creation
 . An attribute named id with the type previously defined as Report.ID, a use of optional, and a fixed value of [report structure identifier]
--11.
--111.
--1111. Attribute Set Complex Type Creation
++=== Attribute Set Complex Type Creation ===
++
  An attribute set is created for a report structure or a metadata attribute which contains child metadata attributes. This type is a complex type with a recommend name of [report structure identifier].[nested metadata attribute identifier].AttributeSet, where the metadata attribute section only applies to attribute sets created for metadata attributes and is assumed to consist of the full hierarchy of the metadata attribute's definition. This complex type must consists of:
 . A sequence consisting of:
 . A local element for each metadata attribute defined as a direct child of the object for which the attribute set is being created. The recommended name of this element is [metadata attribute identifier] and it has a form of unqualified. If the metadata attribute defines a minOccurs and maxOccurs, these values are translated to this element. The type of this element is the type previously created as [report structure identifier].[nested metadata attribute identifier].
--1. Special data functions
--11. Updates
++= Special data functions =
++== Updates ==
  Both the generic and the structure-specific data messages allow for incremental updating of data. This purpose is noted in the action for the data set, which is either inherited from the header of the data message or explicitly stated at the data set level.