Alacrity 发表于 2025-3-21 19:21:34
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Updatable views in object-oriented databases,many previous object algebras, query results are sets of . instead of data tuples or new objects. Consequently, we have to solve the classification problem: where to include the view in the type and class lattices.外表读作 发表于 2025-3-22 02:25:01
Path constraints for graph-based data models: Towards a unified theory of typing constraints, equatemantic terms, and it can be used to support a form of molecular abstraction..We present a sound and complete axiomatization for the case in which interpretations are permitted to be infinite, where the generalization taxonomy is a lower semi-lattice, and where the typing constraints apply only to sFlustered 发表于 2025-3-22 05:40:35
Heiderose Wagner,Herbert Kubicekexpansions there is always the . one called the . of ., which, like Clark‘s Predicate Completion of ., is a first order extension of . providing the appropriate meaning or . for the database. We also show that the stationary semantics can be equivalently defined as the . and as the . of a minimal mo笼子 发表于 2025-3-22 09:27:09
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0302-9743 , deductive andobject-oriented systems have received a great dealofattention, but for the most part these two fields wereevolvingindependently of each other. Today there is a largebody of work suggesting that the deductive andobject-oriented paradigms complement eachother.The object-oriented paradig