akiban is building a new relational database powered unique table-grouping technology to eliminate the impedance mismatch found in traditional relational systems. model store and retrieve your data in the way that best suits your application. akiban persistit an open source fast transactional java b+tree library built as the storage layer to akiban server. persistentit provides highly optimized key value operations with full acid semantics. akiban sql parser an open source production quality parser for