To understand correctly, you are trying to the tables of your database once the user logs in.
One way to do this would be to create an update page which will require you have three different record sets for each of the table, and then add three DA update server behaviors.
If you just want to view the tables, you can use tables and add use the DA Repeat Selection Server Behavior to loop over your tables.
You can also look at this url:
and look under the solution recipes, and click the Updating multiple records (Interactive Tutorial) tutorial.