【摘要】 对象-关系映射就是把对象映射到关系数据库的记录。它是完全从面向对象的角度来设计和开发程序。从Hibernate移植过来的Nhibernate技术是面向.NET环境的对象-关系数据库映射框架。该框架将业务层与数据存储分离。应用程序开发人员能够以统一的、面向对象的方法进行对象数据存取,而不必关心底层关系数据库的具体实现。通过使用ORM框架可以大大减少程序代码量并减少了出错的机会,从而极大地提高了开发效率。更多还原

【Abstract】 Object-relation mapping(ORM) handles persisting objects to and from the records of underlying relation database,it is an object-oriented method to develop application.Nhiberate is an object-relation mapping framework based on.net environment,which is a port of the hibernate.The business layer is separated from data storage.It is possible for developers to fetch or store the object data with uniform andobject-oriented method,withoutconcerning the detailed implementation of theunderlying relation database.The ORM framework decreasesthe quantity of thesource code andthe possibility of mistake.Therefore the developing efficiency is greatlyimproved.更多还原