The program interface is the software layer between a database application and
Oracle. The program interface:
■ Provides a security barrier, preventing destructive access to the SGA by client user
processes
■ Acts as a communication mechanism, formatting information requests, passing
data, and trapping and returning errors
■ Converts and translates data, particularly between different types of computers or
to external user program datatypes
The Oracle code acts as a server, performing database tasks on behalf of an
application (a client), such as fetching rows from data blocks. It consists of several
parts, provided by both Oracle software and operating system-specific software.
程序接口
程序接口是数据库应用程序和Oracle之间的软件层 , 作用:
1. 提供安全保证 , 阻止从客户端至sga的destructive access
2. 作为一种连接机制 , 格式化请求信息 , 传递数据 , 捕获返回错误
3. 转化数据 , 尤其是不同类型之间的电脑和内部用户程序类型
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