Foreign key constraints are a powerful feature provided by many modern RDBMS that allow you to automatically trigger specified actions, such as deletions or updates of the records of database tables that maintain a predefined relationship with each other. This is the second part of a six-part article series that shows you how to work with foreign key constraints in MySQL. - The good news is that you, as a PHP developer, can take advantage of the numerous advantages offered by foreign key constraints when working with InnoDB tables in MySQL (even though support for MyISAM tables has already been announced for future releases of MySQL).
So, if youre interested in learn...
Cascading Deletes of Database Rows in MySQL with Foreign Key Constraints
Posted by alic3inVA 91 days ago (http://www.devshed.com)
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