International Virtual Observatory Alliance

Difference: IVOATheorySimDBDM (16 vs. 17)

Revision 172009-10-05 - GerardLemson

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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, whilst older versions are under the input/ directory, such as  version r902.
I will try to keep track of the different versions and change logs below. At the bottom of the page the generated GraphViz image representing the last (checked in) version of the model. (NB need to ensure it is in synch with the actual model).

 To be discussed 
 
 OK on approach? 
 modelling: analysis(conceptual)->logical->physical
  TAP+XML+UTYPE serialisations derived from logical model
 
  Identify main issues of model 
 sufficiently detailed resources?
  characterisation, provenance etc (see separate page)
  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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+Version history (link on heading):
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+ Version history (link on heading):
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+Sometimes versions do not change in content, but nevrtheless produce different MagicDraw XMI documents. Sometimes this is due to different drawing, redrawing links or something like that.
Here I only indicate the content changed. This I do by generating the SimDB_INTERMEDIATE.xml file and diffing those.
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+ specification/
 

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989
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+ removed explicit dependency from simdb package on IVOAValueTypes package
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+ Rename AccessibleExperiment to AccessibleResource and change its "experiment" reference to point to Resource iso Experiment and rename it to "resource".
  In Contact, INTRODUCED ERROR, changed dattaype of telephone from string to Resource
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+ No change in content
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+ Exact copy of, i.e. no change wrt prop-952
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+prop-951  (Mar 12, 2009 ,derived from input/902 !)
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+ ChildProtocol and ChildExperiment removed.
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+ input/
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 WebService has AccessibleResource (was: AccessibleExperiment)collection, pointing to Resource. I.e. not only experiments are accessible.	 
  CompositeExperiment and CompositeProtocol have been removed. NB will be reintroduced in later model.
  ClusterDetection  and ClusterFinder have been removed. Instead of these the more general PostProcessing and PostProcessor must be used. Those types are no longer abstract.
  PostProcessing has reference "protocol" to PostProcessor. This reference subsets Experiment's protocol reference.
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