Titlebook: Database Schema Evolution and Meta-Modeling; 9th International Wo Herman Balsters,Bert Brock,Stefan Conrad Conference proceedings 2001 Spri

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Extending the Object Query Language for Transparent Metadata Accessed extensive queries over both application data as well as metadata. However queries over metadata via OQL, a de-facto standard for object query languages defined for the ODMG 2.0 Object Model, are tied to low-level implementation details of the underlying schema repository of the database system. H

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Schema Evolution in SQL-99 and Commercial (Object-)Relational DBMSA . denotes the description of the structure and behavior of a database. Straightforwardly, (database) . refers to changes of the database schema that occur during the lifetime of the corresponding database. It particularly refers to changes of schema elements already stored in the database.