How does foreign key work in sql

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August undefined, 2024

WebThe FOREIGN KEY helps us to normalize the data in multiple tables and reduce the redundancy. This means, a database can have multiple tables that are related to each other. Prevent Wrong Data From Insertion If two database tables are related through a field (attribute), using FOREIGN KEY makes sure that wrong data is not inserted in that field. Webkieragrace PH43262-9 Langford Picture Frame, 11" x 14", Matted for 8" x 10" Photo, Black. ★★★★★ ★★★★★. ( 17 ) Quartet Improv Clip Frame Sign, 24" x 36". ★★★★★ ★★★★★. ( 3 ) kieragrace PH43261-2 Langford Picture Frame, 8" x 10", Matted for 5" x 7" Photo, Black. ★★★★★ ★★★★★.

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How does foreign key work in sql

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