Data comparison is a difficult and resource-intensive process.
For convenience, this process can be divided into several steps.
First, you should
compare tables from one database on one server with
the database on the other server. You should choose columns for
data
comparison, and also choose a column that will be a comparison key.
The next step is to choose all data from these tables or some specified
part of the data.
The third and the most important step is comparison of the two tables by
the selected comparison key itself. During this process the status of
each record is set to “
only in source”, “
only in target”, “
different”,
or “
equal”.