ER diagram software for Ubuntu?
I've found MySQL Workbench to be most useful for creating "ER" diagrams.
Though the format is only MySQL Workbench specific I can take a diagram created in Workbench and export it to SQL and execute it against any number of SQL servers.
If you're working with MySQL this tool also doubles as an Administration and Querying tool as well providing the added benefit of integration between the three.
Umbrello can also create ER-Diagrams besides most other UML diagrams. In addition it allows you to export the Diagrams in form of code (i.e. in this case SQL).
try to use Astah Comunity, the application was able to create ER diagrams, class diagrams, etc.To develop applications that application is very suitable. I even heard the professional version could generate java code to class diagram and generate sql code for the ER diagram.
that application was built using java, so the application is multi platform.