Application scenarios ( entity framework ) provides task - based links to topics that match specific application scenarios , such as writing queries or binding objects to data controls 应用程序方案（实体框架）提供了针对典型的应用场景的实际任务的链接，针对典型的应用场景，例如编写查询或绑定对象到数据空间等。
Using this metadata , the entity framework generates a set of classes that programmers use to interact directly with the conceptual model and indirectly with the storage model and the underlying data store 通过这些元数据，实体框架生成一系列的类让编码人员能与概念模型交互，并间接地与存储模型和底层数据存储交互。
Developers who work with the entity framework can write code that operates on conceptual entities and relationships , relying on the entity framework to map those operations to storage - specific relational commands 使用实体框架的开发人员能够编写代码来操作概念模型和关系，然后依靠实体框架型将这些操作映射到特定的相关命令。
The primary benefit of the ado . net entity framework is to elevate the level of abstraction at which developers can work when they deal with data and to decrease the amount of code that is required to create and maintain data - oriented applications Net实体框架的主要好处在于提高了开发人员处理数据时候的抽象级别，从而降低了创建和维护面向数据的应用程序的代码量。
The ado . net entity framework is designed to support data - centric applications and services , and provides a platform for programming against data that raises the level of abstraction from the logical relational level to the conceptual level Net实体框架被设计成支持以数据为中心的应用程序以及服务，提供了一个基于数据的编码平台，因此提升了从逻辑层到概念层的抽象级别。
Rather than supporting direct mapping of object - oriented classes and properties to relational tables and columns , the entity framework maps relational tables , columns , and foreign key constraints to entities and relationships in conceptual models 与直接将面向对象的类及其属性映射成关系型数据表和列不同，实体框架将数据库内的关系表、列以及外键约束映射成概念模型里的实体和关系。
The entity framework enables developers to work with data in the form of domain - specific objects and properties , such as customers and customer addresses , without having to concern themselves with the underlying database tables and columns where this data is stored 实体框架使得开发人员通过特定的领域对象及属性来使用数据，例如客户和客户地址，而不需要关心他们存储在底层数据库时用的表以及列的信息。
The first part designs and makes the frame structure of emulating experiment device of automobile anti - lock braking , every part and its word principle flash and its corresponding play control system with its interface beautiful and its control convenient Abs系统的结构与工作原理部分设计制作了汽车制动防抱死仿真装置的实体框架结构、各组成部分的组成与工作原理动画及相应的动画播放控制系统，界面美观，控制方便。
