MySQl学前知识储备_MySQL
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MySQl学前知识储备
一、数据库基础:
1、数据库(database):保存有组织的数据的容器(通常是一个文件或一组文件)。
2、数据库管理系统(DBMS):创建和操纵数据库的软件系统。
3、表(table):某种特定类型数据的结构化清单。
4、模式(schema):关于数据库和表的布局及特性的信息。
5、列(column):表中的一个字段。所有表都是由一个或多个列组成的。
6、数据类型(datatype):所允许的数据的类型。每个表列都有相应的数据类型,它限制(或允许)该列中存储的数据。
7、行(row):表中的一个记录。
8、主键(primary key):其值能唯一区分和标识表中每个行的一个列(或一组列)。
二、认识SQL:
SQL(发音sequel)是结构化查询语言(Structured Query Language)的缩写,是一种专门用来与数据库通信的语言。SQL是一种语言。
三、认识MySQL:
MySQL是一种DBMS,即它是一种数据库管理软件。具体来说它是一个基于客户机--服务器的数据库管理软件。
四、认识MySQL工具:
如前所述,MySQL是一个基于客户机--服务器的DBMS,因此,为了使用MySQl,你需要有一个客户机软件给MySQL提供要执行的命令。即你需要一个编写和测试MySQL脚本的工具。
MySQL命令行实用程序
MySQl安装后,即可使用此工具。登录方法如下:
【1】Ctrl+R运行cmd启动MS-DOC控制台;
【2】mysql –u用户名 [–h主机名或者IP地址] –p密码

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