db4o began life as a Java database library, but its designers have since created parallel editions for the .Net languages. In 2005, db4o implemented Native Queries, which allow you to express queries as Java (or .Net) methods. Recent additions to the library include Transparent Update and Transparent Activation, which more completely automate object persistence. The engine itself deduces how much of a persistent object's members must be read from and written to storage, simplifying coding and providing better memory management. Also new in db4o is support for Microsoft LINQ. FULL REPORT ...