HIBERNATE - Features of Hibernate

Transparent persistence without byte code processing
		Transparent persistence
		JavaBeans style properties are persisted
		No build-time source or byte code generation / processing
		Support for extensive subset of Java collections API
		Collection instance management
		Extensible type system
		Constraint transparency
		Automatic Dirty Checking
		Detached object support
	Object-oriented query language
		Powerful object-oriented query language
		Full support for polymorphic queries
		New Criteria queries
		Native SQL queries
	Object / Relational mappings
		Three different O/R mapping strategies
		Multiple-objects to single-row mapping
		Polymorphic associations
		Bidirectional associations
		Association filtering
		Collections of basic types
		Indexed collections
		Composite Collection Elements
		Lifecycle objects
	Automatic primary key generation
		Multiple synthetic key generation strategies
		Support for application assigned identifiers
		Support for composite keys
	Object/Relational mapping definition
		XML mapping documents
		Human-readable format
		XDoclet support
	HDLCA (Hibernate Dual-Layer Cache Architecture)
		Thread safeness
		Non-blocking data access
		Session level cache
		Optional second-level cache
		Optional query cache
		Works well with others
	High performance
		Lazy initialization
		Outer join fetching
		Batch fetching
		Support for optimistic locking with versioning/timestamping
		Highly scalable architecture
		High performance
		No "special" database tables
		SQL generated at system initialization time
		(Optional) Internal connection pooling and PreparedStatement caching
	J2EE integration
		JMX support
		Integration with J2EE architecture (optional)
		New JCA support