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ERD for running Oracle database schema

How can I get the full ERD (entity relationship diagram) for a running Oracle database schema?

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There are tools which can do this for you. Oracle Designer and Microsoft Visio have the ability to connect to the database and reverse-engineer the ERD. Those products work great but can be pricey. I prefer to use Happy Fish which is much cheaper. There is no native way to do this with Oracle out of the box.

This was first published in July 2007

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