Checking functional consistency in deductive databases
β Scribed by Erik Lambrichts; Peter Nees; Jan Paredaens; Peter Peelman; Letizia Tanca
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 556 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0020-0190
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
We propose a semantics for aggregates in deductive databases based on a notion of minimality. Unlike some previous approaches, we form a minimal model of a program component including aggregate operators, rather than insisting that the aggregate apply to atoms that have been fully determined or that
We address the problem of retrieving certain and consistent answers to queries posed to a mediated data integration system under the local-as-view paradigm with open sources and conjunctive and disjunctive view definitions. For obtaining certain answers a query program is run under the cautious stab