Intensional and extensional integration and abstraction of heterogeneous databases

✍ Scribed by Luigi Palopoli; Luigi Pontieri; Giorgio Terracina; Domenico Ursino

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 573 KB
• Volume: 35
• Category: Article
• ISSN: 0169-023X
• DOI: 10.1016/s0169-023x(00)00028-8

✦ Synopsis

This paper presents two techniques to integrate and abstract database schemes. The techniques assume the existence of a collection of interscheme properties describing semantic relationships holding among input database scheme objects. The former technique uses interscheme properties to produce an integrated scheme encoding a global, uni®ed view of the whole semantics represented within input schemes. The latter one takes a (integrated) scheme as the input and yields in output an abstracted scheme encoding the same semantics as the input scheme, but represented at an higher, application-dependent abstraction level. In addition, the paper illustrates a possible application of these algorithms to the construction of a data repository. Finally, the paper presents the application of proposed techniques to some database schemes of Italian Central Governmental Oces.