greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases. Being highly optimized for Android, greenDAO offers great performance and consumes minimal memory.
Home page, documentation, and support links: http://greendao-orm.com/
- Limited support of String PKs (no relations using String FKs yet)
 - Fixed index creation (please update your schema)
 - Added CountQuery for creating SELECT COUNT (*) queries with QueryBuilder
 - Added getDatabase in DaoMaster, DaoSession, and Dao
 - Added insertOrReplaceInTx in Dao
 - Added deleteInTx in Dao
 - Added autoincrement() creating AUTOINCREMENT PKs
 - Made DAOs and DaoSessions in active entities transient (allows serialization of entities)
 - Minor fixes
 
- Demo projects works with ADT 17 (moved greendao.jar into libs)
 - CREATE/DROP TABLE may be skipped for entity types: This allows having multiple entity tapes operate on one table
 - Minor improvements
 
- Added NOT IN condition for QueryBuilder
 - Fix for Roboelectric (Issue #22)
 - Minor fix (Issue #5)
 
- DeleteQuery for bulk deletes
 - Entities may implement Java interfaces
 - Entities may extend a Java class
 - Added LIMIT and OFFSET support for QueryBuilder and Query
 - Convenience methods to add named relationships
 - SQL scripts are executed in a transaction by default
 - Fixed queries with special column names (SQL keywords)
 - Changed default names for to-many relations to end with "List"
 - ORDER BY uses LOCALIZED collation for strings by default
 
- Fixed generation of to-many relations
 - Fixed generated import statements when entities/DAO are not in the same package
 
- To-many relations (lazily loaded on the entities)
 - To-many relations with custom join properties
 - Active entities can be updated, refreshed, and deleted directly
 - Significant performance improvements (faster identity scope, faster database result parser)
 - "Keep sections" for custom code in entities were added that won't be overwritten during code generation
 - Other minor improvements
 
http://greendao-orm.com/2011/08/19/query-builder-and-lazy-loading-lists/