Difference: IvoaDAL (74 vs. 75)

Revision 752019-04-12 - MarcoMolinaro

 
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IVOA Data Access Layer

Contents


Rationale

The task of the DAL working group is to define and formulate VO standards for remote data access. Client data analysis software will use these services to access data via the VO framework; data providers will implement these services to publish data to the VO. The DAL working group will define the scope of the DAL standards, outline a process by which DAL standards are defined, and generate the initial version 1.0 of the DAL standard. This standard will provide guidance to data centers and survey projects when designing VO compliant interfaces. It will allow them to justify the allocation of resources for its implementation and maintenance. Once the work on Version 1.0 is accomplished the working group will coordinate future development of the standard.


Current Standards

Standard Current Released Errata Next
ADQL - Astronomical Data Query Language v2.0 REC 2008-10-30 -  
DALI - Data Access Layer Interface v1.1 REC 2017-05-17 - 1.1 Next
Datalink v1.0 REC 2015-06-17 Errata 1.0 Next
SimDAL - Simulation Data Access Layer ** v1.0 REC 2017-03-20 -  
Simple Cone Search v1.03 REC 2008-02-22 Errata  
SIA - Simple image Access v2.0 REC 2015-12-23 -  
SLAP - Simple Line Access v1.0 REC 2010-12-09 -  
SODA - Server-side Operations for Data Access v1.0 REC 2017-05-17 -  
SSA - Simple Spectral Access v1.1 REC 2012-02-10 -  
TAP - Table Access Protocol v1.0 REC 2010-03-27 Errata 1.1 RFC 1.0 Next
TAPRegExt - A VOResource Schema Extension for Describing TAP Services * v1.0 REC 2012-08-27 -  
VOEvent Transport Protocol ** v2.0 REC 2017-03-20 -  

* Registry standard developed by the DAL working group.

** Interest group developed standard endorsed and administered by the DAL working group.

Ongoing Work

Standard Version Date Status Expected Release
SLAP - Simple Line Access Protocol v2.0 2019-02-19 Working Draft pending SSLDM-2.0
ObsLocTAP - Observation Locator Table Access Protocol v0.4 2019-02-27 Working Draft May 2020
Changed:
<
<
ObjVisSAP - Object Visibility Simple Access Protocol v0.2 2018-07-23 Working Draft May 2020
>
>
ObjVisSAP - Object Visibility Simple Access Protocol v0.5 2019-03-19 Working Draft May 2020
 
ProvTAP        
ProvSAP        
Changed:
<
<
TAP - Table Access Protocol v1.1   RFC May 2019
>
>
TAP - Table Access Protocol v1.1   RFC Summer 2019
 
Datalink DataLink-1_0-Next   Discussion  
DALI - Data Access Layer Interface DALI-1_1-Next   Discussion  
ADQL - Astronomical Data Query Language v2.1 2017-12-08 Working Draft  

WG Roadmap


DAL future

Current Activities

Idle or Abandoned

Past Activities


WG Roadmap


Notes on Defining a DAL Standard

This page contains some ideas and definitions to help frame the definition of DAL standards. To be discussed.


Notes on Defining new service parameters

This page contains some hints to help defining new service paremeters accordig to the 3 factor semantics.

Recommended reading

How to contribute



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