In this paper we present some of the results achieved while realizing an international research project aiming at the design and development of an Object-Relational Data Warehousing System (ORDAWA). The most important goals of the project are as follows: the development of techniques for the integration and consolidation of different external data sources in an object-relational data warehouse, the construction and maintenance of materialized relational as well as objectoriented views, and the development of techniques allowing to modify the schema of a data warehouse when data sources change their schemas.

Top