说明：  ORACLE的简单介绍，以及各种sql语法的简单介绍，ORACLE公司是一家提供综合技术产品、方案、服务的数据库公ORACLE数据库设计成可大量存储数据，快速查询数据，保证数据的安全和一致性，跨网络的分布式管理及客户-服务器的配置等。RACLE SQL语法符合ANSI 1986标准SQL和数据库交流的命令式语言 QL*PLUS ORACLE的一种工具, 用来运行SQL和PL/SQL语句PL/SQL ORACLE的过程化编程语言
(ORACLE s simple introduction, and all sorts of SQL syntax of simple introduction, ORACLE company is to provide a comprehensive technology products, solutions and services database and ORACLE database designed to a large store data, fast inquires, ensure data security and data consistency across the network, the distributed management and client/server configuration, etc. RACLE SQL syntax meet ANSI 1986 standard SQL database and the language communication imperative From QL* PLUS the ORACLE a tool, used to run the SQL and PL/SQL statements PL/SQL ORACLE s process programming language)