This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Foreign Keys Pro


A WordPress plugin to simply create MySQL foreign keys.


  1. Upload plugin to the /wp-content/plugins/ directory
  2. Activate the plugin through the ‘Plugins’ menu in WordPress


What are MySQL Foreign Keys?

A foreign key is a column or group of columns in a table that links to a column or group of columns in another table. The foreign key places constraints on data in the related tables, which allows MySQL to maintain referential integrity.
Reference: MySQL Tutorial

Do Foreign Keys have an impact on performance?

This realistically can vary site to site based on many factors. It is always best to test in a development environment, but here is a good article on how it might help performance.


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Contributors & Developers

“Foreign Keys Pro” is open source software. The following people have contributed to this plugin.


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  • This version is the first release.