I make a system, deliver to a customer, I change the system, make
integration utilities, deliver demos, changing demos, and in the end
I have a variaty of DB versions and an administration of those that
kinda consumes a lot of time.

I am looking for a module, collection component or any system that
gives me complete consistancy control. Something that enables me to
design a database and, on command, pick up any DB-file and update to
match it up to the design. Any changes in table or field definitions,
triggers, indexes, keys... everything.

Any suggestions?