MySQL :: MySQL Tutorial :: 7.6 Using Foreign Keys
https://dev.mysql.com/doc/mysql-tutorial-excerpt/5.7/en/example-foreign-keys.html
WebMySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data consistent. A foreign key relationship involves a parent table that holds the initial column values, and a child table with column values that reference the parent column values. A foreign key ...
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