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I am looking for a tool to help in designing and implementing database and entities for a Java project. Probably we are using JPA or direct Hibernate. The features I look for are: Design database with visual modeller Create entities from the visual model Update entity changes to the visual model Import existing database schema as visual model / entity classes So the idea is to originally create a database model with visual tool, then auto-to generate entities from it and afterwards modify the code and expect the visual diagram to reflect the changes (so it works for documentation purposes). I want a full representation of table schema, not just an ER diagram. There have been other questions (of course) but they don't seem to be so specific to Java/JPA and don't have as strict requirements. They are also often just about generating a diagram from code or database schema - they don't require bi-directional support (if that's the right term). The products I found so far are: NetBeans (6.7.1): supports generating Java classes from UML, JPA needs specific templates (sounds too tricky). Doesn't identify new elements from classes. DbSchema : Seems to offer some visualization of schemas, couldn't get it started so can't say much. Commercial, but it also has a free version. Omondo EclipseUML : seems to have some sort of support , but costs like hell . SchemaSpy : Supports only creating documentation fr

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