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| Paper: |
Entity-Relationship Model for the ALMA Observatory |
| Volume: |
461, Astronomical Data Analysis Software and Systems XXI |
| Page: |
685 |
| Authors: |
Morales, F. |
| Abstract: |
In the ALMA Archive, the observations metadata are stored as a set of XML documents according to an object-oriented design. This work provides a full Entity-Relationship Model for the ALMA observatory, including the Alma Project Data Model (APDM) and the Alma Science Data Model (ASDM).
A new data model has been proposed and all the metadata have been migrated into this new entity-relationship model, allowing the access to those data in a relational way and using regular SQL language.
As a consequence of using a standard entity-relationship model, it is possible to write very fast and simple queries to browse, query, analyze and mining into ALMA metadata. Furthermore it is possible to use a big set of third-party database applications available today to navigate, query and report the data. |
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