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Apache Empire-db是一个开源的关系型数据持久化组件，能够实现数据库无关的动态查询定义，简便的数据读取和更新。与其它持久化组件相比如：Hibernate、TopLink、iBATIS或JPA实现，Empire-db更注重编译期类型安全，减少冗余，开发效率的改进。 Empire-db所有的数据库实体都通过动态bean进行管理，因此允许在运行期改变数据模型。

Apache Empire-db is an Open Source relational data persistence component which allows database vendor independent dynamic query definition as well as safe and simple data retrieval and updating. Compared to most other solutions like e.g. Hibernate, TopLink, iBATIS or JPA implementations, Empire-db takes a considerably different approach, with a special focus on compile-time safety, reduced redundancies and improved developer productivity.

This is how it compares:

	The classic approach (e.g. JPA, Hibernate)	Empire-db
Database schema definition	XML or annotations	Java object model
Data and metadata access	Static JavaBeans used for simple data transfer. No or cumbersome metadata support.	Dynamic beans with metadata available through comprehensible and concise object hierarchy.
Dynamic query definition	String-based query language or object based API requiring column / property names to be provided as string literals. Usually works with full database entities.	Type-safe, string-free and intuitive API. Build any SQL statement including the select clause and use it with any POJO not just full featured entity beans.