Open source object database for .NET (object-oriented database)

Hi,

I'm doing some research on Database and Entities. I tested a great object database for .NET and JAVA open source called db4object.

"db4o is the open source object database that enables Java and .NET developers to store and retrieve any application object with only one line of code, eliminating the need to predefine or maintain a separate, rigid data model".

db4objects offers the following products:

• db4o database runtime engine to be embedded and distributed with your products
• db4o Replication System (dRS) to sync db4o and relational backends
• ObjectManager Enterprise, a database visualizer and IDE plug-in for VisualStudio and Eclipse
• Support and Professional Services:
• dDN Enterprise is the total package for professional product development with db4o's database engine
• dDN membership is the minimum support and maintenance subscription
• Professional Services such as consulting on db4o applications, implementations of custom features, etc.

What do you think? Cool haaaaaa