Mysql – Named Parameters in MySQL Workbench Queries

From the MySQL Workbench 5.2 window, select Database -> Synchronize model which will allow you to synchronize the model (EER diagram) with the database (you need to create a saved connection) for it.

I recommend this method over just reverse engineering the model from the database since it maintains the layout of the EER diagram. One caveat is that you need to add new tables to the EER diagram manually.

The maintenance feature is a bit hidden in MySQL Workbench. You can reach it by opening your connection as usual and right clicking on your schema to open the schema inspector:

You will get a new tab in the editor area with many pages for inspection/maintenance. Click on the Maintenance button at the bottom to open this page:

From there it should be clear what to do.