Foreign Key Constraint. You create a foreign key constraint to maintain referential integrity. By creating a foreign key constraint, you are telling MySQL to enforce certain rules over the data. When data is inserted, deleted or updated, MySQL will check that it adheres to the foreign key . This guide will show you how you can view table foreign key constraints in MySQL Workbench, free management and development tool for MySQL.. Table Inspector. First option to view FKs is with Table shohinblog.com open Table Inspector click (i) icon that shows on hover over table. A foreign key is a field in a table that matches another field of another table. A foreign key places constraints on data in the related tables, which enables MySQL to maintain referential integrity. Let’s take a look at the following database diagram in the sample .

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MySQL tutorial 18 - Foreign Keys


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