Implementation of Characterisation DM (ongoing effort)
"ASPID-SR": Prototype of VO-Compliant Science-Ready Data Archive
Contributors (in alphabetic order):
Victor Afanasiev (SAO RAS), Francois Bonnarel (CDS), Igor Chilingarian (SAI
MSU), Serguei Dodonov (SAO RAS), Mireille Loyus (CDS), Nikolai Samokhvalov
(MIPT), Ivan Zolotukhin (SAI MSU)
- Heterogeneous data archive: spectra, images, datacubes, IFU
spectroscopy, spectropolarimetry. Data obtained with the Russian 6-m
telescope (BTA of SAO RAS)
- Characterisation metadata (Spatial, Spectral, Temporal, Observable) up-to level 2 (BOUNDS) for every dataset, up-to level 3
(SUPPORT) for selected datasets
- PostgreSQL database with a native XML support as a backend: usage of XPath
coupled with SQL
- Various query interfaces: SIAP/SSAP, HTTP-based characterisation
metadata query, Web-service accepting ADQL/x
Prototype will be presented on the forthcoming ADASS in Tucson (2
posters: "Comprehensive metadata querying for heterogeneous data archives",
and "ASPID-SR: Large VO-compliant Science-Ready Data Archive")
Implementation:
- Native XML-support by N.S. implemented in a frame of Google SoC-2006.
- PgSphere for operations with geometrical objects on a sphere (to be
replaced with Q3C later)
Characterisation metadata example
Examples of SQL-XPath queries
Contents of the "chartest" database