db4o Developer Community

These are custom ASP.NET 2.0 providers which use db4o as back-end. Beginning with Membership Provider, Role Provider, and Profile Provider. Code is based on MSDN sample code and is unit-tested. Version 1.0 uses db4o 7.4 and C# 3.0. Prior versions of source use db4o version 6.1 and C# 2.0. http://www.codeplex.com/db4oProviders

There is a challenge going on at the PowerShell Podcast (http://www.powerscripting.net) in Episode 46 (the current episode as of this writing) for anyone who can get Db4O working with Microsoft Powershell.  The guys hosting the podcast are giving away a prize to anyone who can accomplish the task.  For those who are not familiar with ...

Now Microsoft Compact Framework Users Can Leverage a Native ODBMS Engine with the Same LINQ Interface as in .NET  SAN MATEO, Calif., Oct 6, 2008 - db4objects, creator of the leading open source object database, has announced that its db4o object database now supports Microsoft's LINQ on the Compact Framework v3.5. After the introduction of an ...

As the popular saying  tell us, there's no such thing as free lunch. It is no different for work related subjects. When we introduced Transparent Activation (TA) concept we knew that it could make developer's life easier (by presenting a simpler model for object life cycle): developers would not be required to think about activation depths ...

Hello, I am a German student and I am trying to write a Silverlight Application which stores its data in a db4o Database. There are threads in this forum which cover the same topic, but the links to the example application does not work (for me) and it seems as if the other application uses db4o to store data on the Clients side. I want to use ...

edit: i've somehow managed to post this in the wrong section, if an mod could move this post i'd be gratefull :$ (guess it's too early to start working, can't wait for w-e ^^ )    Hi. i'm quite ''new'' to db4o, but i've read the tutorial a couple of times, and the other docs i could find.   basically i'm writing a .NET ...

I have 2 suggestions for future db4o [.NET] versions. 1. I have one persistent class, which stores data in an array. It does so because I don't know what properties will be stored at compile-time. But at run-time I know that, for example, data[0] = 'first name', data[1] = 'last name', data[2] = 'address' and so on. Now, db4o doesn't (?) ...

Hot of the presses! A new project just hit our main .net repository: Db4objects.Db4o.Linq. An optimizing linq provider for db4o. Linq expressions are analyzed and optimized down to db4o's fast querying interface: SODA. Whenever a suitable translation cannot be found the query executes as a plain Linq for Objects query (a predicate that is tested ...

Hello, I'm not sure how much this applies to Java (I'm a bit rusty there), but .NET has some really really easy, intuitive and useful transaction management options built in and I would love to see db4o implement these. I have implemented a Transaction Resource Manager for an ORM I was working on before, and really it's not very difficult, but ...

In this post Rodrigo introduced the concept of Transparent Persistence that makes developers life even easier as, once configured, db4o will take care of changed objects and make sure they are updated in the database (when the transaction gets committed) without developer assistance.This level of transparency is, of course, a welcome addition but ...