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What is available in the realms of database modelling software that is free. I am developing an SQLExpress database.

CA ERWin - community version although is free, I can't see an option to allow me to create a database, either using a direct connect or via creating an SQL script file.

Embarcardo ER/Studio - 14 day trial Can I reinstall this every 14 days?

What others are there, that will allow me to model my database and create a "create" script or "update" sql script?

Thanks in advance.

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Do you have access to a non-express version of Visual Studio? –  gbn Aug 6 '12 at 8:36

2 Answers 2

There are several choices:

  • SQL Power Architect (download without registration from Google Code). This is open source, but it seems there is no further development.
  • Oracle's Data Modeler (but it only supports Oracle, SQL Server and DB2. PostgreSQL for example is not supported)
  • A free version of TOAD Data Modeler - although that has some serious limitations on the size of the model
  • Open ModelSphere a general purpose modeler (including UML) but can also be used for ER modelling
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Though it is intended for IBM products, IBM Data Studio does support non-IBM Databases. From what I can see it allows some design/modelling of databases. It is free. Maybe take a peek at it. Here are the features and benefits.

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Thanks, that is more than helpful. I might give DB2 express a go too. –  Craig Aug 7 '12 at 15:55

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