TAP-1_0-Next < IVOA

IVOA Web>IvoaDAL>TableAccess>TAP-1_0-Next (2016-10-24, MarcoMolinaro) (raw view)

---++ TAP-1.0 Next

This topic collects proposals for modifications of the TAP-1.0 specification in order to improve the next revision of the specification.

Errata to the [[http://www.ivoa.net/documents/TAP/20100327/][TAP-1.0]] recommendation can be found on the devoted [[TAP-1_0-Errata][TAP-1_0-Errata]] page. 

---+++ Proposed Features
Suggestion for revision of TAP-1.0, in terms of errata content, clarifications and proposed new features, where initially collected in the [[TAPImplementationNotes][TAP Implementation Notes]] wiki topic, later serial as an [[http://www.ivoa.net/documents/Notes/TAPNotes/index.html][IVOA Note]] (its source available on [[https://code.google.com/p/volute/source/browse/#svn%2Ftrunk%2Fprojects%2Fdal%2FTAPNotes][volute]]), and then discussed at various Interoperability Meetings.

With reference to the TAP-1.1 internal WD (see [[TableAccess][TAP] topic), a session and splinter discussion took place at Sesto Interop. The outcome of that discussion can be summarized as (thanks to IVOA.PatrickDowler):

   * remove REQUEST
   * remove VERSION
      * versioned LANG parameter needs to be examined/prototyped wrt. !ADQL-2.1
   * explore a mechanism (tap_schema?) to denote tables that can/cannot be queried by !ADQL
      * and what LANG to use of not !ADQL?
      * allows for a TAP service with !ADQL to query tap_schema and other LANG for non-relational content
   * datatypes: point, interval, circle, polygon, box?, coordrange?
      * move defintion of xtype and serialisation upstream -> !DALI? !VOTable?
   * contains and intersects for interval -> !ADQL-2.1
   * clarify how field metadata to be generated
      * for union?
      * non-unique result table column names?
   * !TAPRegExt-1.1 remains separate doc
      * need to remove/relax standardID constraint

   * idea from Mark Taylor:
      * ordering of tap_schema rows (int) 
      * columns for sure, maybe tables? all?
   * idea from Pat:
      * add arraysize to tap_schema.columns and keep "size" for compat

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Topic revision: r3 - 2016-10-24 - MarcoMolinaro

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