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I feel like I'm being stupid, but I can't find anywhere on the phpMyAdmin interface to add constraints to foreign keys e.g. CASCADE ON DELETE
I've looked for similar questions on here and on the phpMyAdmin wiki but I can't find anything about it.
I realise I could do this via the query interface, but I'd like to know how to do it through the graphical interface.
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MySQL CONSTRAINT is used to define rules to allow or restrict what values can be stored in columns. The purpose of inducing constraints is to enforce the integrity of a database. MySQL CONSTRAINTS are used to limit the type of data that can be inserted into a table.
Click the "Structure" tab. Click "Relation view". Under the foreign key constraints, click the "Choose column to display" drop down and make a choice.
The syntax for creating a unique constraint using an ALTER TABLE statement in MySQL is: ALTER TABLE table_name ADD CONSTRAINT constraint_name UNIQUE (column1, column2, ... column_n); table_name.
The basic syntax of an ALTER TABLE command to ADD CHECK CONSTRAINT to a table is as follows. ALTER TABLE table_name ADD CONSTRAINT MyUniqueConstraint CHECK (CONDITION);
First, you should have your storage engine as InnoDB. Then select a table and go to 'Structure' tab.
Under the table you will see 'Relation view', click it. From there you could add constraints.
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