Alacrity 发表于 2025-3-21 19:21:34

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musicologist 发表于 2025-3-21 23:42:08

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 s

Flustered 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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grovel 发表于 2025-3-22 16:04:52

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grovel 发表于 2025-3-22 19:49:20

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极小量 发表于 2025-3-22 23:55:15

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两栖动物 发表于 2025-3-23 01:25:33

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defeatist 发表于 2025-3-23 08:17:04

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
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查看完整版本: Titlebook: Deductive and Object-Oriented Databases; Second International C. Delobel,M. Kifer,Y. Masunaga Conference proceedings 1991 Springer-Verlag B