db4o announces the release of version 2.9 of the object database system "db4o - database for objects".

Some of the new features in this release:
- Hot online backup.
- Tree refresh.
- Access to all meta data and to all stored field values by API, even if the fields are no longer present in application classes.
- Support for singletons stored to static fields in Client/Server mode.

About db4o:
db4o is an object database system, targetted for high performance demands on low-ressource systems like embedded devices.

The key assets of db4o...
simplicity - one line of code stores any object
speed - direct pointer access guarantees the maximum performance possible
...make db4o equally suitable for large enterprise applications and for use behind a webserver.

db4o features include ACID transactions, query-by-example, S.O.D.A. object query API, WeakReference object identity management, and automatic class schema recognition and adoption. db4o comes as a 230kB Java Jar.

db4o also supplies a version written in C# for all .NET languages, also runnable on the CompactFramework and on mono.

Trial versions are available for download from the db4o website