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Schema evolution in OODBs using class versioning

... KB This paper describes work carried out on a model for the versioning of class definitions in an object-oriented database. ... on attributes of the previous and current version of a class definition, instances of any version of the class can be converted to ...

Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment

Schema Transformation without Database Reorganization

... components. We show that data independence, which is a neglected concept in object databases, helps to avoid reorganizations in case ... and reducing schema transformations. We informally present a couple of examples to illustrate the idea of a schema transformation ...

Publication - cat - 04/17/2013 - 07:05 - 0 comments - 0 attachments

Semantic heterogeneity as a result of domain evolution

... These problems occur when the semantics of values of a particular domain change over time in ways that are not amenable to applying ...

Publication - cat - 04/17/2013 - 06:27 - 0 comments - 1 attachment

SQL/SE: a query language extension for databases supporting schema evolution

... range:  n/a Attachment Size ... 472.64 KB The incorporation of a knowledge of time within database systems allows for temporally related ...

Publication - cat - 04/16/2013 - 16:16 - 0 comments - 1 attachment