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1 +11 Transforming between versions of SDMX
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1 +{{box title="**Contents**"}}
2 +{{toc/}}
3 +{{/box}}
4 +
5 +== 11.1 Scope ==
6 +
7 +The scope of this section is to define both best practices and mandatory behaviour for specific aspects of transformation between different versions of SDMX.
8 +
9 +== 11.2 Compatibility and new DSD features ==
10 +
11 +The following table provides an overview of the backwards compatibility between SDMX 3.0 and 2.1.
12 +
13 +(% style="width:1165.29px" %)
14 +|(% style="width:218px" %)**SDMX 3.0 feature**|(% style="width:417px" %)**SDMX 2.1 compatibility**|(% style="width:526px" %)**Comments**
15 +|(% style="width:218px" %)Multiple Measures|(% style="width:417px" %)(((
16 +Create a Measure Dimension Or
17 +Model Measures as Attributes
18 +)))|(% style="width:526px" %)For a Measure Dimensions, all Concepts must reside in the same Concept Scheme
19 +|(% style="width:218px" %)Arrays for values|(% style="width:417px" %)Cannot be supported|(% style="width:526px" %)Arrays are always reported in a verbose format, even if one value is reported
20 +|(% style="width:218px" %)Measure Relationship|(% style="width:417px" %)Can be ignored, as it does not affect dataset format|(% style="width:526px" %)
21 +|(% style="width:218px" %)Metadata Attributes|(% style="width:417px" %)Can be created as Data Attributes|(% style="width:526px" %)Not for extended facets
22 +|(% style="width:218px" %)Multilingual Components|(% style="width:417px" %)Cannot be supported|(% style="width:526px" %)
23 +|(% style="width:218px" %)No Measure|(% style="width:417px" %)Can only be emulated by ignoring the Primary Measure value|(% style="width:526px" %)
24 +|(% style="width:218px" %)Use extended Codelist|(% style="width:417px" %)A new Codelist with all Codes must be created|(% style="width:526px" %)
25 +|(% style="width:218px" %)Sentinel values|(% style="width:417px" %)Cannot be supported in the DSD|(% style="width:526px" %)Rules may be supported outside the DSD, in bilateral agreements
26 +
27 +The following table illustrates forward compatibility issues from SDMX 2.1 to 3.0.
28 +
29 +(% style="width:1175.29px" %)
30 +|**SDMX 2.1 feature**|(% style="width:320px" %)**SDMX 3.0 compatibility**|(% style="width:634px" %)**Comments**
31 +|Measure Dimension|(% style="width:320px" %)(((
32 +Create a Dimension with role ‘MEASURE’
33 +Or
34 +Create multiple Measures from the Measure Dimension Concept Scheme
35 +)))|(% style="width:634px" %)If the dataset has to resemble that of SDMX 2.1 Structure Specific, then the first option must be used
36 +|Primary Measure|(% style="width:320px" %)(((
37 +Create one Measure with role
38 +‘PRIMARY’; use id=”OBS_VALUE”
39 +)))|(% style="width:634px" %)