db4o Developer Community

DataNucleus Access Platform is a standards-compliant Java persistence product. It is fully compliant with the JDO1, JDO2, JDO2.1, and JPA1 Java standards.New in this release: JDO has been upgraded to 2.2 final. ASM has been upgraded to 3.1. Fixes to L2 caching have been made. A JDK1.5 method has been removed, allowing use with JDK1.3/4. A fix to ...

ODBMS.ORG, a vendor-independent non-profit group of high-profile software experts lead by Prof. Roberto Zicari, today announced the exclusive publication of a new series of user reports on using technologies for storing and handling persistent objects: http://www.odbms.org/downloads.html#odbms_ur 11 user reports have been published, from the ...

Yesterday we had an interesting event in Wits university  -  a presentation about implementing XP in customer contracts. Looks like making a contract can be a real challenge, but that’s the only way to go. The suggested model for XP: fixed cost contract. The idea is to disclose your costs and expected profit to the [...]

Hey everyone- Read the following post from a thread on Slashdot about Brian Aker's thoughts on relational & OO databases (see http://interviews.slashdot.org/article.pl?sid=07/11/28/0019253&from=rss ): Today if you look around in the open source world you will find examples where developers are wrapping OO layers on top of the relational ...

Hey pvz-  I will try to answer some of what you asked: (1) What about standardisation for all the Enhanced Persistence collections of different vendors? They are all different, so we would have to get everyone to agree to a common API/semantics. Without some common foundation to start from, I am afraid based on my experience in ODMG that ...

Download source code - 780 kB Introduction RemotingService project was developed as a simple proof of concept (the idea taken from Database as a Webservice). It is just one more way to realize a remote persistence. In fact, putting any database on a web-server and providing a remote user interface to it, will realize the same idea from [...]

I was recently writing about how to use Marshal By Value with db4o and was very surprised how little information could I found on this actually simple subject. So, to contribute to the global network - here is another Marshal By Value example, this time with xml. Download RemotingXml.zip - 11.3 KB Introduction RemotingXml project was developed ...