I'm using the services API to manage accounts for the application's
database. The program it's able to create and update the accounts but
any time I try to delete them I get the error "no permission for
delete/write access to TABLE USERS" which suggest that the user
doesn't have enough privileges on the security2.fdb database.

Is there any way to give the user DELETE privileges on security2.fdb?

I'm using FirebirdSQL 2.0 and the .NET Provider 2.0

Thanks