JDO Annotation Attribute

String primaryKey default ""

Name for a generated primary key constraint.

Since:: JDO 2.1

ObjectDB Database	Getting Started	Support
DBMS Features	Quick Tour with JPA	ObjectDB FAQ
Editions and Prices	JPA Console Tutorial	ObjectDB Manual
Licence	Web App Tutorial	Forum
Attributions	Java EE JPA Tutorial	Issue Tracking
Privacy	Spring MVC JPA Tutorial	Website Search
Terms of Use	Download ObjectDB	Contact Us

Copyright © 2003, 2010, 2025 ObjectDB Software, all rights reserved. The JPA API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the open source JPA 2 RI (EclipseLink) and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0. The JDO API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the JDO 2.2 API and is available under the terms of the Apache License, v. 2.0. Images on this website are available under these licecnes. Documentation on this website explains how to use JPA in the context of the ObjectDB Object Database but mostly relevant also for ORM JPA implementations, such as Hibernate (and HQL), EclipseLink, TopLink, OpenJPA and DataNucleus. ObjectDB is not an ORM JPA implementation but an Object Database (ODBMS) for Java with built in JPA 2 support.