Reviewing a database with 400 tables is no easy task, especially when you didn't make the database. It seems like it would make everyone's life easier is if people would prefix their database tables in a way that helps group tables logically.
For example, there are tables in this 400 table database specifically used for configuring the application. It would be nice if they were prefixed with "config_" to denote that they are configuration tables. Instead of tables A, M, and Z intermingled with the rest of the tables in the database, they would be nicely grouped together as config_A, config_M, and config_Z.
But even if everyone were to start prefixing their databases the way I want right now, it wouldn't help me out with the one I've already got. A man can dream, though ... a man can dream.