You can use Business Objects, extensions of Service Data Objects (SDO), to provide an abstraction layer for data access.

可以使用业务对象（服务数据对象 (SDO) 的扩展）为数据访问提供抽象层。

youdao

It accepts the request from the browser, requests the service from the business logic layer, generates the presentation, and responds to the browser.

它从浏览器接受请求，从业务逻辑层请求服务，生成表示并对浏览器做出响应。

youdao

The SOA approach is to separate the layers with consumers interacting with the business objects through the service layer rather than directly.

SOA方法分离各个层，消费者通过服务层与业务对象进行交互，而不是直接进行交互。

youdao

Beginning with the well-known Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS) and Software-as-a-Service (SaaS) structure, Gartner added in a Business and Information Systems layer that includes brokerages, management and security.

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