(r3) DiVergence < IVOA

IVOA Web>IvoaTCG>DiVergence (revision 3) (raw view)~~EditAttach~~

<h3>How to stop divergence of Parameter-TAP and ADQL-TAP?</h3>
There are two versions of TAP under development, one based on parameters, one based on the ADQL language, and the danger is for these to diverge into two overlapping, but incompatible, mechanisms.  The diagram on the DAL blog shows an eventual convergence, but I would like to know how it will work.

I would state this more strongly: neither the Param or QL documents are so far along that they cannot be joined now.  The Param document actually includes the ADQL queries.  There are minor differences in the interface specifications, but these could be resolved now quite easily, I would think.  If we wait until later, when groups have done implementations, there will be a lot of resistance to making changes.  (Bob)


cosponsor BobHanisch

I thought that it had been decided a year ago at Beijing to focus on the QL version of TAP - see page 5 of the Plenary summary  http://www.ivoa.net/internal/IVOA/InterOpMay2007Plenary/dal-plenary2.pdf
for documentary proof - Quoting

"Remove explicit data model support (POS, SIZE, etc.)•Will use ADQL plus UTYPE plus REGION instead (etc.) "



So I third this motion... PaulHarrison





<br/>
<!--
      * Set ALLOWTOPICRENAME = %MAINWEB%.TWikiAdminGroup
-->

Topic revision: r3 - 2008-05-15 - PaulHarrison

IVOA

Log in or Register

IVOA.net
Wiki Home
WebChanges
WebTopicList
WebStatistics

Twiki Meta & Help
IVOA
Know
Main
Sandbox
TWiki

TWiki intro
TWiki tutorial
User registration
Notify me

Working Groups

Interest Groups

Committees

Stds&Procs

www.ivoa.net
Documents
Events
Members
XML Schema