I went looking for such a package some time ago and stumbled on a page from
Holland (I believe) which offers some free (to non-comercial users)
documentation software which supports both ERDs and DFDs, plus many other
drawing-types about which I know nothing. The software is available in binary
only, unfortunately, but many platforms are supported.
I have found the software to be quite good on my Linux machine (at home); at
work (commercial...) I am happy to have the much more sophisticated packages
which support the generation of SQL from the ERD etc. These cost a great deal
more, however. On the otherhand, the author of the package, TCM: "Toolkit for
Conceptual Modeling", does claim it would be "not too difficult" to write such a
package, and he does provide a decent description of his file format.
The package can be found at:
http://wwwis.cs.utwente.nl:8080/~tcm/index.html
Cheers,
Mark
--
Mark Dalphin email: mdalphin@amgen.com
Mail Stop: 29-2-A phone: +1-805-447-4951 (work)
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