1.2.2 Child Tables
This gives you a list of all of the tables that have a foreign key based on the primary key of the table that you have selected.  In this case; BUSINESS_ASSOCIATE. 
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You can select any row in this screen (it's scrollable) to do a further drill down into the table that you are interested in.
 If you selected a table that did not have any child tables hung off of it, the screen will give you a pop-up window like:
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