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Schema Evolution and the Relational Algebra

... both aspects of transaction time, evolution of a database's contents and evolution of a database's schema. They define a relation's schema to be the relation's temporal ...

Publication - erhard - 04/17/2013 - 08:27 - 0 comments - 0 attachments

Managing and querying transaction-time databases under schema evolution

... by (i) introducing Schema Modiļ¬cation Operators (SMO)s to represent the mappings between successive schema versions and (ii) an XML ...

Publication - krlis1337 - 04/17/2013 - 01:38 - 0 comments - 1 attachment