DB Cruiser -- Table Work Area -- Foreign Keys -- Child Tables:
 
(see below for explanation)
 
Explanation:
 
By clicking the corresponding FK Table Name column, MT_UNIT_IMPL, on the last screen, a new window pops up, it display the foreign keys information of MT_UNIT_IMPL table of the schema SCOTT (see above screen).

On the above screen, You can see that MT_UNIT is one of MT_UNIT_IMPL's parent tables, therefore, if you click MT_UNIT under PK Table Name, you will be back to last screen. Also from the above screen, you see that MT_UNIT_IMPL has several parent tables.

You may keep exploring the parent or chlid tables by clicking the corresponding table names. That means, you can navigate among all tables related by parent/child keys, but has no any parent table.

Of course, you may explore other information about parent/child tables, like Column Definitions, Primary Keys, etc., by clicking corresponding function buttons.

Back to Table Column Definitions.