ADQL/_SkyNode for theo"> Use case: ADQL/SkyNode for theory


Astrophysicists doing simulations wish to publish their results in a VO compatible manner, in this case they wish to make their database of simulation catalogues available for querying via the VO query language, publishing it as a SkyNode. What is required is a specification that includes such datasets and a query language that allows the specifics of theoetical datasets. The datasets will include mock catalogues of observational objects such as galaxies, stars, but also of "unibservable" objects such as clusters extracted from N-body simulations.

Principal actor

Theoretical physicist wishing to publish results of simulations producing mock catalogues.

End Result

A SkyNode for theory datasets and a VO query language that supports peculiarities of theory datasets.

Other actors

  • VOQL working group
  • database "wrapper"


  • Standards available to describe the tables/columns containing theory data (to be decided what is required in detail).

Flow of events

  • Simulaiton is run, mock catalogues are calculated
  • Mock catalogues are stored in relational database
  • A web service is written that exposes this database as an IVOA compatible skynode and supports querying by VO query language
  • Service is registered in IVOA compatible registry


  • One can query registries to discover services wrapping theory databases
  • One can query these services for metadata according to VO standard protocol
  • One can query the database with VO standard query language

Basic assumptions

Alternative flows

Key references

Examples of existing theory query services

Requirements on IVOA working goups

  • VOQL: ADQL/SkyNode specifications must support databases containing simulation data, foreign keys
  • Registry must support metadata distinguishing theory sky nodes from observational ones
  • UCD must support theory phenomenology:
  • Apps?: would be nice to have an application that allows me to assign UCD/Units inforation to result of free-form SQL query where possible.

Originally sent by G. Lemson - 2 Oct 2005
Last modified:
Please add comments below. This area should be used for refinement of the above document. If you want to ask questions or start a dialogue with the author, please use the theory mailing list.

Need to check that appropriate UCDs are available to describe the columns. -- GuyRixon - 04 Oct 2005

Topic attachments
I Attachment History Action Size Date Who Comment
Microsoft Word filedoc TheorySkyNode-0.1.doc r1 manage 68.5 K 2006-09-22 - 22:13 RickWagner Proposed changes to SkyNode Interface
PDFpdf TheorySkyNode-20060922.pdf r1 manage 225.1 K 2006-09-22 - 22:17 RickWagner Proposed changes to SkyNode Interface
Edit | Attach | Watch | Print version | History: r7 < r6 < r5 < r4 < r3 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r7 - 2007-01-19 - BrunoRino
This site is powered by the TWiki collaboration platform Powered by Perl This site is powered by the TWiki collaboration platformCopyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback