Rename (MySQL)

How can I rename Table or Field ?

check out the ALTER TABLE statement

If you're running ALTER on your own computer (in which case you'd probably connect to MySQL as root) then it's okay, but a few hosts out there block the ALTER statement. Therefore you might want to redesign your database structure only initially (i.e., when setting up your PHP app), and not make it a normal procedure for your app.

true, some hosts do... try it, just make a temp script... and then get rid of it though