Keratectomy
发表于 2025-3-25 04:13:39
https://doi.org/10.1007/978-3-031-58409-1re, the semantics in relational database schemata. Functional dependence is an important property of a relation. In a relation which verifies some functional dependency, there is a functional connection between the parts of tuples. Functional dependencies can be defined like functions f: X --> Y which are mappings satisfying the conditions:
resuscitation
发表于 2025-3-25 11:19:33
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FACT
发表于 2025-3-25 13:14:38
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委屈
发表于 2025-3-25 18:55:28
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易于出错
发表于 2025-3-25 21:24:17
Functional Dependencies,re, the semantics in relational database schemata. Functional dependence is an important property of a relation. In a relation which verifies some functional dependency, there is a functional connection between the parts of tuples. Functional dependencies can be defined like functions f: X --> Y which are mappings satisfying the conditions:
概观
发表于 2025-3-26 02:07:22
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合法
发表于 2025-3-26 06:27:05
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枯燥
发表于 2025-3-26 10:50:12
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MOTTO
发表于 2025-3-26 14:28:08
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勋章
发表于 2025-3-26 17:02:06
Başak Alpan,Albrecht Sonntag,Katarzyna Herdly utilized for databases, they only recently were subject of theoretical investigations. Their expressive power is not utilized yet. They could, for instance, play a more important role in management of distributed databases (replication).