You might have a web user interface view that s called by a controller , which calls a facade layer , which calls a data access object , which calls an object - relational mapper , which calls a database 您可能拥有一个由控制器调用的web用户界面（ ui ）视图，它调用外观层，外观层调用数据访问对象，数据访问对象调用对象关系映射，对象关系映射调用数据库。
In ejbs with rmi - iiop you have the option although you are not required to of including persistence operations in an outer transaction scope if you use entity beans or session beans with mapper objects if you so choose 如果您使用带有mapper对象的实体bean或会话bean （如果您这样选择的话） ，在采用rmi - iiop的ejb中，您就可以选择（尽管不是必须的）在外部事务范围内是否包括持久化操作。
The control panel applets that allow the user to change display drivers , to assign waveform sounds to system alerts , to configure the midi mapper and to calibrate joysticks . a midi mapper suports the midi patch service that allows midi files to be authored independently of end - user midi synthesizer setups 控制面板工具允许用户改变显示驱动程序、设置屏幕保护器、安装多媒体设备驱动程序、将波形声音赋给警报、配置（ midi ）映像器和校准游戏杆。
The research findings finally will have application in the ccd mapper sensor of fy - 4 meteorological satellite which will be launched off in 2010 , the theory and realistic significance of this research is very important for the improving of the image formation technique of china satellite remote sensing 课题的研究成果最终将应用于即将于2010升空的风云四号气象卫星ccd成像仪中,对于我国卫星遥感领域成像技术的提高具有重大的理论和现实意义。
Each of the above is classified as a full domain model mapper , where tables are mapped to objects , object state is maintained , objects follow a connected model as client components interact with the object , underlying database operations are implied either all or some of the time , and an abstract query language works against the object model 上面每一个框架都被分类为一个完整的域模型映射程序，其中将表映射到对象，对象状态得到维护，对象在任何时间或者某些时间跟随一个连接的模型由于客户机组件与对象交互，因此将涉及到基础数据库操作，并且抽象查询语言通过对象模型进行工作。
