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Lecture Notes in Computer Science
In heterogeneous data warehousing environments, autonomous data sources are integrated into a materialised integrated database. The schemas of the data sources and the integrated database may be expressed in different modelling languages. It is possible for either the data source schemas or the warehouse schema to evolve. This evolution may include evolution of the schema, or evolution of the modelling language in which the schema is expressed, or both. In such scenarios, it is important fordoi:10.1007/978-3-540-30464-7_48 fatcat:zzzswzkrh5aljbcszh3464kumq