VOQL WG Plenary Session Sept 27, 2004 William OMullane for Masatoshi Ohishi.

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VOQL WG Plenary Session Sept 27, 2004 William OMullane for Masatoshi Ohishi

VOQL WG - Background Started Cambridge England May 2003 Decided to concentrate on Astronomical Data Query Language (ADQL) first –SQL based –Allow exposure of catalogues –Good step up from Cone Search Also agreed to look at WebServices to take ADQL and return VOTable (OpenSkyNode)

OpenSkyQuery Architecture

ADQL0.8.1 –INTO : MyDb, MySpace for both SELECT –TOP : tie down semantics –JOIN : Use Explicit JOIN syntax –Add units : to ADQL/s, ADQL/x Web services conversion tool is available in Oz CDS released UNIT conversion library –Improve XMATCH : Move sigma inside the bracket Add + for outer join and ? for uncovered areas Pseudo Tables/Virtual Columns - DAL –Yuji Shirasaki -Could pretend to have a standard Image Table and do SIAP as an ADQL query yshirasa.ppt Select * from images where format=FITS and region(circle j )

Roadmap May 2004 Interop at Cambridge USA –Changes / Enhancements to ADQL discussed June 2004 – ADQL 0.8 issued (NO DML) Sep 2004 Interop meeting Agreement --> ADQL0.8.1 or ADQL 0.9 & interaction between us and Registry/DAL/DM groups After interaction with Registry/DAL/DM groups and discussion within our group, we prepare a draft for ADQL 1.0. When it has been approved by the IVOA executive committee, it will become ADQL 1.0 But we probably stick with ADQL for January for SkyNodes – registry may use newer Sep/Oct (?) 2004 Brussels : to report activities of the VO community Work toward January Demos Jan 2005 Demos and ADQL-1.0 & SkyNode-1.0 release. –NVO will show Open Sky Query with ADQL at AAS in San Diego Jan Improvements including New data types proposed by Shirasaki May 2005 Interop meeting / GGF joint WS in Japan (??) Discussion on ADQL-1.x, SkyNode-1.x ?