These tools are intended to be used by WordPress developers for testing and debugging. The backup tool lets you do a quick backup of individual MySQL tables by duplication into the same database, i.e. using "CREATE TABLE copy LIKE orig; INSERT INTO copy SELECT * FROM orig;". Useful for testing when you know only some tables will be changed so you don’t have to save and restore the entire database. Most useful for repeated testing, i.e. backup table(s), test, restore table(s), test, restore table(s), … test, restore table(s), delete backup. The restore operation resets the contents of current tables to the contents of the backup tables but does not delete the backup tables so you can repeatedly restore a table. The backup tables will be named by concatenating the original table name with the backup suffix. It is important that no existing table have a name ending in this suffix. The backup tool can be accessed by clicking on the Dashboard menu item "Database Developer’s Tools".