About: Checks database integrity (mainly reference integrity).
Piwigo does not rely on MySql key constraints. It maintains these integrity constraints itself. For a variety of reasons (interrupted script execution, database manipulation outside Piwigo, ... ), the database might become logically corrupted.
This plugin detects potential issues (it does not attempt to fix them).
After installation, go to Tools/Maintenance in the Administration menu and click on "Check database integrity"