SimpleDALRegExt < IVOA

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---+!! VOResource Extensions for Describing SSA, SIA, SLA, and ConeSearch Services

   $ *Note:* : This standard is formerly known as RegSimpleDAL; discussion of the standard has moved here. 

The page tracks the development of the IVOA specification document defining VOResource Extensions for SSA, SIA, SLA, and ConeSearch Services.  The draft abstract is as follows:

<blockquote>
An application that queries or consumes descriptions of VO resources
must be able to recognize a resource's support for standard IVOA
protocols.  This specification describes how to describe a services
that supports four fundemental data access protocols--Simple Cone
Search (SCS), Simple Image Access (SIA), Simple Spectral Access (SSA),
Simple Line Access (SLA)--using the VOResource XML encoding standard.
A key part of this specification is the set of VOResource XML
extension schemas that define new metadata that are specific to those
protocols.  This document describes in particular rules for describing
such services within the context of IVOA Registries and data discovery
as well as the VO Stadard Interface (VOSI) and service
self-description.  In particular, this document spells out the
essential mark-up needed to identify support for a standard protocol
and the base URL required to access the interface that supports that
protocol.
</blockquote>

---+++!! Contents
%TOC%

---++ Documents

   $ Internal Working Draft: [[%ATTACHURL%/SimpleDALRegExt-wd.html][Describing Simple Data Access Services v1.0]]

   $ Working Draft Schemas:  [[http://www.ivoa.net/xml/ConeSearch-v1.0.xsd][ConeSearch-v1.0.xsd]] %BR% [[http://www.ivoa.net/xml/SIA-v1.0.xsd][SIA-v1.0.xsd]] %BR% [[http://www.ivoa.net/xml/SSA-v1.0.xsd][SSA-v1.0.xsd]] %BR% [[http://www.ivoa.net/xml/SLAP-v0.1.xsd][SLAP-v0.1.xsd]]

---++ Status

In brief,  
   * The working short name for this effort is now *SimpleDALRegExt*.  (This was changed from *RegSimpleDAL* during the [[InterOpMay2010][May 2010 Interop]].)  
   * Development of the spec document is now underway via the [[http://code.google.com/p/volute/][volute]] google code repository.  You can find it under [[http://code.google.com/p/volute/source/browse/#svn/trunk/projects/registry/RegSimpleDAL][trunk/projects/registry/RegSimpleDAL]]
   * During the internal development phase, updated versions will be irregularly posted to this page.  
   * Ray Plante is targeting a working draft version to be available immediately after the Nov 2009 Interop

-- IVOA.RayPlante - 05 Nov 2009


---++ Schema-to-Spec Stylesheet

To support this effort, a few people (Harrison, Plante) have author XSL stylesheets to convert XML Schemas into HTML.  Ray Plante's efforts have been uploaded to the [[http://code.google.com/p/volute/][volute]] google code repository under [[http://code.google.com/p/volute/source/browse/#svn/trunk/projects/registry/tools][trunk/projects/registry/tools]].  _more info coming_


---++ Comments to current draft

The suggested ssa: prefix for the SSAP extension schema is unfortunate.
This is due to the abuse of xmlns in "binding" the model name 
(the thing before the colon in a utype) to a data model URL in the SSA
spec. Withit, in any document that contains SSA utypes (e.g., table definitions
of SSA services), the ssa XML prefix is taken.  So -- can we use ssap?  Or
ssareg?

-- IVOA.MarkusDemleitner - 18 May 2011


---++ Historical materials

This work used to be traced via the RegSimpleDAL page. That page is now deprecated. Attachments to that page include:

   * [[%PUBURL%/%WEB%/RegSimpleDAL/RegSimpleDAL-wd.html][RegSimpleDAL-wd.html]]









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Attachments
Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
html	SimpleDALRegExt-wd.html	r6 r5 r4 r3 r2	manage	191.3 K	2011-09-21 - 21:07	RayPlante	added Appendix B
png	dalregext-in-architecture.png	r1	manage	67.2 K	2011-09-21 - 16:58	RayPlante
This topic: IVOA > WebHome > IvoaResReg > ResourceMetadata > SimpleDALRegExt
Topic revision: r8 - 2011-09-21 - RayPlante