Integrates Java objects, XML documents, SQL relational databases and LDAP directories in a unified model that allows information to be exchanged, persisted and manipulated in a variety of ways. Supports JDO. [Open Source, BSD-like]

An JDO implementation for relational databases (RDBMS) for managed and non-managed environments. It is compliant with JDO 1.0 specification and provides enterprises and developers a one-stop solution for developing and running JDO applications. By ObjectFrontier. [Commercial]

Starting with an introduction to JDO, it provides detailed code samples of developing applications with JDO. Articles and tutorials related to JDO.

By Robin Roos. Links to book stores and online PDF version. Reviews, sources, errata. JDO related resources.

This quiz will test knowledge of the JDO specification and give you a better idea about how transparent persistence works.

A student site about JDO. Thesis not yet completed.

JDO implementation using JDBC. A fork of TJDO with application identity, support for existing schemas, and conformance for J2EE. [Open source, Apache 2 license]

By David Jordan. Java developers currently have several data persistence techniques in their repertoire. However, each of these techniques has its drawbacks. See how JDO and its query language JDOQL avoid these shortcomings.

The Proposed Final Draft of the JDO 1.1 specification for object-relational mapping on the Java platform.

Performing and integrated management of transparent persistence, implements the official Sun Java Data Objects Specification. By Riflexo srl. [Commercial]

A home page for JSR-000012, Java Data Objects. It's managed by the specification lead, Craig Russell.

Provides an interactive forum for activities such as organizing events, preparing an events calendar, distributing newsletters, and downloading JDO-related products.

A high performance JDO implementation for relational databases. JDO Genie implements all the required features and most of the optional features of version 1.0 of the specification. [Free non-commercial and commercial editions]

JDO object relational mapping tool and Enterprise Java Beans EJB, JDO persistence manager. [Shareware]

Implements the official Sun Java Data Objects Specification 1.0, providing transparent persistence for Java objects to a relational database. By SolarMetric Inc. [Commercial]

A full-featured JDO (Java Data Objects) persistence layer and object/relational mapping tool to store Java Object hierarchies in relational database systems(RDBMS). [Commercial]

A full featured JDO compliant Object Database for Java, written entirely in Java. [Free for non-commercial]

A vendor-independent consultancy with a specific focus on JDO and J2EE. JDO resources.

This expert perspective lays it on the line: Exolab's Castor JDO product does not support the JDO standard.

Java Data Objects (JDO) is neither a silver bullet nor without merit. But its most important contribution may be to wake developers up to the coming paradigm shift: from database to objectbase, a place where not only data but data and behaviors are stored...

In this scathing response to Don Bales' recent critique of Java Data Objects, David Jordan offers proof that JDO does not regard SQL as a bad thing, yields shorter and simpler code, and is vendor-neutral.

An in-depth look at using Castor's marshalling engine to do data binding of Java objects to tables, rows, and columns in an SQL database.

Jacek Kruszelnicki discusses the issues encountered with persistence, presents traits for an ideal persistence layer, and reviews available JDO solutions.

This article presents two major JDO specifications: the Sun Microsystems JDO and the open source Castor JDO. Jacek Kruszelnicki discusses their relative pros and cons, and their similarities and differences.

JDO tool for integrating the broad variety of corporate databases and existing systems to Java and J2EE websites. [Commercial]

An implementation of the Java Data Objects standard (JDO). Includes many additional features and development tools. [Commercial]

By Chris Richardson. Learn how to use Java Data Objects (JDO) to accelerate development and test domain model outside of the application server and without a database.

High performance, full-featured, spec-compliant JDO implementation for Relational Databases. [Commercial]

Implementation of Sun's JDO specification (JSR 12), designed to support transparent persistence using any JDBC-compliant database. [Open source, Apache Software License]

TradeCity Cybersoft JDO tutorial.

A set of JDO drivers allowing transparent storage of components and Java objects in a range of store types (RDBMS, ODBMS, XML files, flat files, TP-monitored transactions). [Commercial]

Provides interface-based persistence to RDBMSs while allowing developers to focus on the object model, not the physical layer. It implements many of the interfaces specified by JDO. [Open source, GPL]