Join dependency

In the area of computer science known as dependency theory, a join dependency is a constraint on the set of legal relations over a database scheme. A table T is subject to a join dependency if T can always be recreated by joining multiple tables each having a subset of the attributes of T. If one of the tables in the join has all the attributes of the table T, the join dependency is called trivial.

单词	Join dependency
释义	Join dependency 英语百科 Join dependency In the area of computer science known as dependency theory, a join dependency is a constraint on the set of legal relations over a database scheme. A table T is subject to a join dependency if T can always be recreated by joining multiple tables each having a subset of the attributes of T. If one of the tables in the join has all the attributes of the table T, the join dependency is called trivial.
随便看	at livery Atlixco Atlixtac Atlizumab ATLL ATLLs atlo axial dislocation syndrome atloaxoid at local atlodidymus atlodymus at loggerheads at loggerheads with Atloid Atloido Occipital Joint Atlon at long ball at long bowls at longest at long interval at long intervals at long last at long range at loose end at loose ends