International Virtual Observatory Alliance

Difference: IVOATheorySimDBDM (10 vs. 11)

Revision 112009-05-19 - GerardLemson

META TOPICPARENT	name="IvoaTheory"

This page is devoted to describing the SimDB data model (SimDB/DM from now on).

Current model

As described here all development can be followed on Volute. Particularly relevant for the discussion on this page is the data model in uml/SimDB_DM.xml. The previous versions as well as later working versions can be found in the history of this file, as well as its direct predecessor version r902.

Changed:

<
<

TODO

>
>

To be discussed

OK on approach?

Changed:

<
<

- analysis(conceptual)->logical->physical
- TAP+XML

>
>

- modelling: analysis(conceptual)->logical->physical
- TAP+XML+UTYPE serialisations derived from logical model

Identify main issues of model
- sufficiently detailed resources?
- characterisation
- normalisation (problem for XML, little for TAP)
- "queriability" (problem for TAP)
- missing semantic vocabularies
- quantities/units
Clean up
- documentation in the UML
- Description of model in Note
finalise the serialisation to UTYPEs
finalise the serialisation to TAP (see IVOA.IVOATheorySimDBTAP)
finalise the serialisation to XML schema ((see IVOA.IVOATheorySimDBREST)
reuse by other specs
- SimDAP
- S3
...

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