You'll find here the following options.
Database cleanup to clean the database ex : delete volumes without items, etc.
stored procedures Store you personnal statistic that can be used in Edition management or update queries .
database update Very important option. it ensures the update of the database structure when you update PMB files with a new version. No data is lost in this process.
Table description.
MySQL maintenance, maintenance of the database. Check in particular database integrity.
Parameters to personalize PMB, by example location of the library, or activation of the weather forecast on the public access.