Tools for discovering de facto foreign keys in databases? [closed]

Answer 1

The following products are all claiming to provide foreign-keys discovery abilities:

ERwin http://www.ascent.co.za/products/ca_erwin_data_profiler.html

Informatica https://community.informatica.com/onlinehelp/analyst/961/en/index.htm#page/data-discovery-guide/GUID-33EAF039-ECFC-49FD-96F4-A2C2A4EB857F.1.148.html

and XCaseForI http://xcasefori.com/discovering/index.html

Statistical methodologies able to provide a kind of similarity rank like range distribution and creation time as suggested by Kirk, seems to be the right way. .. I'd need to implement it using SAS EG or any free tool.