ISSUE-37: Align Data Cube with SDMX 2.1

SDMX-2.1

Align Data Cube with SDMX 2.1

State:
POSTPONED
Product:
Data Cube Vocabulary
Raised by:
Richard Cyganiak
Opened on:
2012-10-13
Description:
Data Cube is based on a subset of the SDMX 2.0 information model. The latest version of SDMX is 2.1. The major differences are described in this document:

http://sdmx.org/wp-content/uploads/2011/04/SDMX_2-1_Major_Changes.pdf

Many of the changes are in parts not covered by Data Cube, or are specific to the XML syntaxes and web service / registry functionalities. Some, however, affect the parts covered by Data Cube, and the WG needs to consider whether to update Data Cube to reflect these changes. This would improve compatibility with SDMX data and (assuming the changes happened for good reason) the modelling, at the cost of disrupting legacy data and development time.

The main relevant changes appear to be:

* The attachment level mechanism has changed significantly
* The time period / time format parts of the spec have changed and presumably improved (see Implementation Notes document)
* The mechanism for dimension/attribute roles (isTimeDimension etc.) has been generalized; the role is now picked from a code list, rather than from a hard-coded set
* Measure dimensions are now “more special” than before and defined in terms of a concept scheme rather than code list
* Various differences between cross-sectional and time series datasets have been removed or reduced

Some of these items deal with features that we consciously did not include in Data Cube because they were strange (e.g., the dimension role stuff). We should re-evaluate whether the redesigned feature provides enough value to add it.
Related Actions Items:
No related actions
Related emails:
  1. Re: AW: [QB] Disposition of issues (from dave.e.reynolds@gmail.com on 2013-03-07)
  2. Re: AW: [QB] Disposition of issues (from dave.e.reynolds@gmail.com on 2013-03-07)
  3. AW: [QB] Disposition of issues (from kaempgen@fzi.de on 2013-03-07)
  4. [QB] Disposition of issues (from dave.e.reynolds@gmail.com on 2013-03-05)
  5. AW: QB UC document update + thoughts about consolidated UC document (from kaempgen@fzi.de on 2013-02-14)
  6. QB UC document update + thoughts about consolidated UC document (from kaempgen@fzi.de on 2013-01-10)
  7. ISSUE-37 (SDMX-2.1): Align Data Cube with SDMX 2.1 [Data Cube Vocabulary] (from sysbot+tracker@w3.org on 2012-10-13)

Related notes:

Richard please estimate amount of work and if it's worthwhile. Otherwise we'll probably postpone this.

Sandro Hawke, 17 Jan 2013, 15:47:29

Per cygri telecon 21-Feb-2013, going to LC with Data Cube based on SDMX 2.0 would be acceptable. Cygri would prefer, time permitting SDMX 2.1, would make the quality of the vocab deliverable much better. He guarantee this will happen but will make good faith effort to do so.

Bernadette Hyland, 21 Feb 2013, 15:44:17

Per cygri telecon 21-Feb-2013, going to LC with Data Cube based on SDMX 2.0 would be acceptable. Cygri would prefer, time permitting SDMX 2.1, would make the quality of the vocab deliverable much better. He cannot guarantee this will happen but will make good faith effort to do so.

Bernadette Hyland, 21 Feb 2013, 15:45:29

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