convert 发表于 2025-3-26 21:49:02

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Inexorable 发表于 2025-3-27 02:07:00

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Directed 发表于 2025-3-27 08:02:22

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负担 发表于 2025-3-27 12:27:51

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Adulate 发表于 2025-3-27 16:09:42

Linear Approximation of Semi-algebraic Spatial Databases Using Transitive Closure Logic, in Arbitrarebraic spatial databases in arbitrary dimensions, our earlier results being true for only two dimensions..Consequently, we can prove that first-order logic with a transitive closure operator extended with stop conditions, can express all Boolean topological queries on semi-algebraic spatial databases of arbitrary dimension.

Consensus 发表于 2025-3-27 18:27:30

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万灵丹 发表于 2025-3-27 23:58:00

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尊严 发表于 2025-3-28 02:49:53

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天气 发表于 2025-3-28 07:34:08

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Alienated 发表于 2025-3-28 14:12:02

Molecular Interrelationships and Functions,ne nature of time..We investigate different genericity classes relative to the constraint database model for spatio-temporal databases and we identify sound and complete languages for the first-order, respectively the computable, queries in these genericity classes.
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查看完整版本: Titlebook: Database Programming Languages; 8th International Wo Giorgio Ghelli,Gösta Grahne Conference proceedings 2002 Springer-Verlag Berlin Heidelb