On Java article about Hibernate 3 Annotations [onjava.com]
Hibernate is a powerful, high performance object/relational persistence and query service for Java. It lets you develop persistent objects following common Java idiom, including composition, association, inheritance, polymorphism, and the Java collections framework.
Comprehensive feature list maintained by JBoss group, including headings such as Transparent persistence without bytecode processing, XML mappings Hibernate3, Object-oriented query language, Flexible object / relational mappings, Simple APIs, Automatic primary key generation, Object/Relational mapping definition, HDLCA (Hibernate Dual-Layer Cache Architecture), Ultra-high performance, J2EE integration, Extensible type system etc.
"Hibernate is a Professional Open Source project and a critical component of the JBoss Enterprise Middleware System (JEMS) suite of products. Professional Open Source combines the benefits of free open source software with the expert support services and accountability you expect from a trusted company."
"Hibernate is a powerful, high performance object/relational persistence and query service for Java. It lets you develop persistent objects following common Java idiom, including composition, association, inheritance, polymorphism, and the Java collections framework. To allow a rapid build procedure, Hibernate rejects the use of code generation or bytecode processing. Instead, runtime reflection is used and SQL generation occurs at system startup time. It supports Oracle, DB2, MySQL, PostgreSQL, Sybase, Interbase, Microsoft SQL Server, Mckoi SQL, Progress, SAP DB, and HypersonicSQL."