db4o-database for objects 2.15

db4o - database for objects - is a fast Java object database developed for mobile platforms and other low-resource environments. A footprint of 200 kB saves device memory and allows online-download. Query-By-Example minimizes resource consumption and improves performance. Automatic object recognition permits zero-admin deployment. High integration with the Java programming language omits driver overhead and maximizes speed. Changes to application classes are not necessary to make objects persistent. All standard Java constructs like arrays and JDK2 collections are supported. A flexible translator interface allows adoption to highly specific usecases. Callback methods allow cascade-on-delete and cascade-on-copy. WeakReference memory management ensures a low memory footprint. db4o supports Java Web Start. db4o is threadsafe and runs in servlet environments like Tomcat. A benchmark for a performance comparison against relational databases is available with the download. Deployment is free in non-commercial applications.