It is common for architects of database interaction logic, for example, to have no knowledge of how their logic is specifically expressed via user interface code.

举例来说，对于数据库交互逻辑的设计师来说，不知道他们的逻辑是如何通过用户接口代码表示出来，是很普通的现象。

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The 4gl vendor assumes the burden of maintenance for these frameworks and the developer is free again to focus on the user interface and core business logic.

4gl供应商承担这些框架的维护责任，开发人员重新获得自由，可以专注于用户界面和核心业务逻辑。

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In a small JSP application, it is common to see the data, business logic, and the user interface combined into one module of code.

在小型JSP应用程序中，经常会看到数据、业务逻辑和用户界面被组合在一个代码模块中。

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