Gnumler

Gnumclipse is a newly developed plugin of Eclipse which offers the same functionalities offered by Gnumclipse.

Gnumler was born has our thesis project at Politecnico di Milano, but we feel it could be very useful to developers using hibernate and other ORMs.
Gnumler's core is a rather complex model representing entities and diagrams: that's why it can easily be made able to understand different "languages".
It can be used both as a simple translator, from the UML schema to the DB through the mapping and as basic editing tool to adjust the DB schema. It can be used starting from the UML diagram or the DB smoothly.

Right now, Gnumler supports :

Umbrello : Gnumler can import XMI files made by Umbrello
MySQL both as export and impor, but Gnumler can work with plain SQL statements as well
Hibernate as the main ORM framework

Gnumler makes use of these libraries :

JGraph
Apache Torque
Apache common log and lang
MySql Connector