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'Ferret' is the GNU data modeller. It lets you create data models and implement them in a relational database. You can draw your data model via an entity-relation diagram, generate the tables from it (another graphical diagram), and then generate the SQL that creates such relational tables. Several SQL dialects are supported (for most popular free software database systems) and it is very easy to patch the sources to support more. This package was formerly known as 'GerWin.'


User and developer guide available in HTML, PDF, PS, text, Texinfo from

"IRC irc:// " IRC Help channel
"IRC irc:// " IRC development channel

Heckert gnu.small.png This is a GNU package:ferret


Download version 0.7 (beta)
released on 19 December 2008



LicenseVerified byVerified onNotes
GPLv2orlaterKelly Hopkins19 December 2008
GPLv3Kelly Hopkins19 December 2008

Leaders and contributors

Jose E. Marchesi Maintainer

Resources and communication

Audience Resource type URI
Developer VCS Repository Webview
Bug Tracking,Developer Mailing List Info/Archive
Support Mailing List Info/Archive

Software prerequisites

This entry (in part or in whole) was last reviewed on 28 July 2005.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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