推荐回答(4个)
SQL是英文Structured Query Language的缩写,意思为结构化查询语言。SQL语言的主要功能就是同各种数据库建立联系,进行沟通。按照ANSI(美国国家标准协会)的规定,SQL被作为关系型数据库管理系统的标准语言。SQL语句可以用来执行各种各样的操作,例如更新数据库中的数据,从数据库中提取数据等。目前,绝大多数流行的关系型数据库管理系统,如Oracle, Sybase, Microsoft SQL Server, Access等都采用了SQL语言标准。虽然很多数据库都对SQL语句进行了再开发和扩展,但是包括Select, Insert, Update, Delete, Create,以及Drop在内的标准的SQL命令仍然可以被用来完成几乎所有的数据库操作。
SQL Server
SQL Server 是一个关系数据库管理系统它最初是由Microsoft Sybase 和Ashton-Tate三家公司共同开发的于1988 年推出了第一个OS/2 版本在Windows NT 推出后Microsoft与Sybase 在SQL Server 的开发上就分道扬镳了Microsoft 将SQL Server 移植到Windows NT
系统上专注于开发推广SQL Server 的Windows NT 版本Sybase 则较专注于SQL Server在UNIX 操作系统上的应用在本书中介绍的是Microsoft SQL Server 以后简称为SQL Server或MS SQL Server
SQL Server 2000 是Microsoft 公司推出的SQL Server 数据库管理系统的最新版本该版本继承了SQL Server 7.0 版本的优点同时又比它增加了许多更先进的功能具有使用方便可伸缩性好与相关软件集成程度高等优点可跨越从运行Microsoft Windows 98 的膝上型电脑到运行Microsoft Windows 2000 的大型多处理器的服务器等多种平台使用
ACCESS:是微软的桌面型小数据库软件,即可用作开发小程序也可用作小数据库,很多小网站用它来作后台数据库;
SQL:是中型,免费开源的数据库,现在大部分中小网站采用;
MSSQL:是微软的中型数据库软件,企业里面应用比较多,MSSQL2005以后的版本其实也算是比较大型的数据库了!
SQL和ACCESS是两种不同的数据库!SQL SERVER是通过用SQL语句执行
SQL语句是一种标准的数据库查询语言,全称上面已经有了,从国际化标准组织把它规范起来以后,几乎所有的数据库都对它进行了支持,而且各自还进行了扩充, 也就是说: 有了它, 不管你访问任何数据库,所用的查询语言基本上都是统一的
sql语句和sql server 只是名字上有一点相似,但一个是查询语言, 一个是数据库管理系统,完全不同的概念, 数据库管理系统要用到SQL语言, 但SQL语言不是数据库,ACCESS 也要用到SQL查询语言. 跟SQLSEVER 一样, 但两者性能上有差异!
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