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Newsletter :: April 2008
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db4o 7.3 Development Release is available for immediate download!


K U D O S    O F    T H E    M O N T H

"I did not have to do anything to setup db4o to save an object. It just serializes the object to the database. No need to worry about table names, column names or data types. This all comes for free with this engine, allowing a developer to focus on the domain model and the value-add code, rather than data persistence."

-- Eric Hexter in LosTechies.com


A R T I C L E S

-- The efficiency of Transparent Persistence is added to .NET LINQ provider --

  • db4o features the only optimized LINQ (Language Integrated Native Query) provider for an open source object database > read blog
  • Transparent Persistence (TP) automatically stores and retrieves just the needed objects > more about Transparent Persistence and Transparent Activation
  • TP prevents object graph activation issues such as retrieving too many or too few associated objects


-- New "Stable" Release 6.4 is available --

"Stable" releases are of highest quality and stability, suitable for deployment in shipping products. Major highlights include:

  • Commit time callbacks and pushed updates – to enable client’s object-cache to stay in sync with changes that are committed to the server, and to ensure that certain constraints are not violated
  • Exceptions - helps developers catch certain conditions and recover from them during execution
  • Performance – an order of magnitude faster embedded client/server version of db4o


-- New "Production" Release 7.2 is available --

“Production” releases are candidates for "Stable", yet they have more recent features and are recommended for evaluation and development. Highlights of 7.2 include:


-- dRS, db4o popular replication utility is now "collection-aware" --

  • dRS now preserves collections’ individual element’s accessibility and integrity after replication on .NET and Java


-- db4o’s Ad-Hoc LINQ Console application offers fun, interactive mode --

  • Using Ad-Hoc LINQ you can play and experiment with queries and objects interactively
  • You are invited to enhance it further


-- db4objects Survey results are in --

  • Our users vouch primarily for performance and scalability.
  • There’s a clear trend towards more professional db4o users!
  • Thanks for your participation! The winners are announced (in this blog)!


-- Highlighted contributions --


-- Profiling and tuning performance --


-- Events --

  • The db4o User Conference 2008 (Berlin) in March was a big success! > read more


L O O K I N G    I N T O    T H E    M I R R O R

Select press coverage about db4o since the last newsletter:

Object-oriented database programming with db4o - Part 2 (by Buu Nguyen)
The Code Project, March 25, 2008

When to use an Embedded ODBMS (by Rick Grehan)
TheServerSide.com, April 07, 2008

Polytechnic University in Hannover Germany Rehabilitates Injured Athletes and the Disabled with db4o
SAN MATEO, Calif., April 21, 2008 (Press Release)

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With best regards

The db4objects team.

www.db4o.com
newsletter@db4o.com
Phone +1 (650) 577-2340
1900 S Norfolk Street, Suite 350
San Mateo, CA 94403 (USA)



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