In mainstream languages, event-based interfaces are usually implemented using callback functions, a style familiar in graphical user interface (GUI) programming and the like.
在主流语言中，基于事件的接口通常使用回调函数实现，这是一种在图形用户界面(GUI)之类的编程中常见的方式。
There are three main methods of accessing DBaaS: through a graphical user interface (GUI), command line interface (CLI), or directly via a standard representational state transfer (REST) interface.
有3种访问DBaaS的主要方法：通过一个图形用户界面(GUI)、命令行界面(CLI)或直接通过一个标准的具象状态传输(REST)接口。
GUI is an interactive interface between the user and the system, user can operate the GUI to call the system command, and the system gives the feed back to user.
图形用户界面是软件系统使用者同系统本身进行交互的接口，系统的功能是通过用户对图形用户界面的操作来调用的，系统产生的结果也是通过它反馈给用户的。
GUI is an interactive interface between the user and the system, user can operate the GUI to call the system command, and the system gives the feed back to user.
图形用户界面是软件系统使用者同系统本身进行交互的接口，系统的功能是通过用户对图形用户界面的操作来调用的，系统产生的结果也是通过它反馈给用户的。
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