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Changes for page 1 Introduction

Last modified by Helena on 2025/09/10 11:19
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60 60  
61 61  In addition to this, in order to aid understanding each package can be considered to be in one of three conceptual layers:
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63 -the SDMX Base layer comprises fundamental building blocks which are used by the Structural Definitions layer and the Reporting and Dissemination layer
63 +* the SDMX Base layer comprises fundamental building blocks which are used by the Structural Definitions layer and the Reporting and Dissemination layer
64 +* the Structural Definitions layer comprises the definition of the structural artefacts needed to support data and metadata reporting and dissemination
65 +* the Reporting and Dissemination layer comprises the definition of the data and metadata containers used for reporting and dissemination
66 +* In reality the layers have no implicit or explicit structural function as any package can make use of any construct in another package.
64 64  
65 -the Structural Definitions layer comprises the definition of the structural artefacts needed to support data and metadata reporting and dissemination
66 -
67 -the Reporting and Dissemination layer comprises the definition of the data and metadata containers used for reporting and dissemination
68 -
69 -In reality the layers have no implicit or explicit structural function as any package can make use of any construct in another package.
70 -
71 71  === 1.3.2 Version 1.0 ===
72 72  
73 73  In version 1.0 the metamodel supported the requirements for:
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75 75  Data Structure Definition including (domain) category scheme, (metadata) concept scheme, and code list
76 -
77 77  Data and related metadata reporting and dissemination
78 78  
79 79  The SDMX-IM comprises a number of packages. These packages act as convenient compartments for the various sub models in the SDMX-IM. The diagram below shows the sub models of the SDMX-IM that were included in the version 1.0 specification.
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87 87  The version 2.0/2.1 model extends the functionality of version 1.0. principally in the area of metadata, but also in various ways to define structures to support data analysis by systems with knowledge of cube type structures such as OLAP{{footnote}}OLAP: On line analytical processing{{/footnote}} systems. The following major constructs have been added at version 2.0/2.1
88 88  
89 89  Metadata structure definition
90 -
91 91  Metadata set
92 -
93 93  Hierarchical Codelist
94 -
95 95  Data and Metadata Provisioning
96 -
97 97  Process
98 -
99 99  Mapping
100 -
101 101  Constraints
102 -
103 103  Constructs supporting the Registry
104 104  
105 105  Furthermore, the term Data Structure Definition replaces the term Key Family: as both of these terms are used in various communities, they are synonymous. The term Data Structure Definition is used in the model and this document.