Minutes of joint session VOQL2/DAL1, 17-May-2005

Chair: Masatoshi Oishi

Minutes: Markus Dolensky


- group agrees to promote V0.91 of ADQL + Skynode documents to PR level

- presentation by G. Lemson: Implementation of the multi-archive multi-catalogue cross-matcher application
  one of the issues is about multiple detections (SDSS) of the same object but different IDs since object ID is per field
  demoed tools will be made public

- presentation by Y. Shirasaki: Experimental Integration of SIAP, SSAP and SkyNode through the "Virtual Columns"
  D. Tody: issue about object support in DBO - should it be required; not clear about
           support across RDBMSes
  D. Tody: How to define parameters like sky projection:
           => data provider register a virtual DB structure; the business logic to map to the real
              DB content is part of the Skynode server.

- prsentation by D. Tody: Data Access Layer - Thoughts on VOQL/DAL integration

  A. Micol: What does ADQL that GET doesn't provide.
            more powerful query interface

DAL/SSA schedule: prepare for promotion of SSA to PR level at Madrid interop (Oct. 05)

Discussion about how to evolve interfaces vs. stability. SIA V1.1 will be an example for
an interface that is going to require modifications by service providers as well as portals.

- interface version number needs to be mandatory parameter in registry interface(s)

- discussion of roadmap (Oishi)


action items:
- M. Oishi to initiate RFC for promotion of V0.91 of ADQL + Skynode to proposed recommendation level
- J. McDowell takes action to review V0.91 from data model group perspective
- G. Lemson will write up conclusions about GAVO XMatch exercise and circulate it to VOQL list
- ADQL authors: specify how to handle errors in positional cross match in next version of ADQL
- Ivoa Exec: guideline on evolution process of standards with regard to the impact on data providers