DbDiff

DBDiff is an ODBC database utility that performs a comparison between two databases.
Any database that supports ODBC access can be used.

The databases DO NOT have to be of the same type, they don¿t even need to be on the same machine, as long as they are both accessible from the machine running DBDiff.
DBDiff uses a carefully planned and designed algorithm for performing the quickest, most accurate comparison between the databases; this algorithm allows for three different levels of comparison to be performed on the databases.