Abstract:In this paper, we present UNIDOOR, a deductive objectoriented database system (DOOD). We demonstrate the distinctive features of UNIDOOR data model and its query language. We then show how essential object-oriented and database management features, that were missing from other DOOD implementations, are successfully supported in UNIDOOR. These features include a scalable persistent store with crash recovery, database integrity and transaction control facilities in a multi-user environment.
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