于纽约州立大学石溪分校获得博士学位,现为耶鲁大学计算机科学Sidney J. Weinberg教授,计算机科学系主任,曾任贝尔实验室信息科学研究中心副主任。他是ACM Fellow 和 IEEE Fellow,曾获得IEEE Taylor L. Booth 教育奖、 ACM Karl V. Karlstrom 杰出教育者奖、ACM SIGMOD 贡献奖和IEEE 计算机学会杰出论文奖。他的研究兴趣包括操作系统、数据库系统、存储系统、网络管理和分布式系统。
于纽约州立大学石溪分校获得博士学位,现为耶鲁大学计算机科学Sidney J. Weinberg教授,计算机科学系主任,曾任贝尔实验室信息科学研究中心副主任。他是ACM Fellow 和 IEEE Fellow,曾获得IEEE Taylor L. Booth 教育奖、 ACM Karl V. Karlstrom 杰出教育者奖、ACM SIGMOD 贡献奖和IEEE 计算机学会杰出论文奖。他的研究兴趣包括操作系统、数据库系统、存储系统、网络管理和分布式系统。
Although we refer to the SQL language as a “query language,” it can domuch
more than just query a database. It can define the structure of the data, modify
data in the database, and specify security constraints.
IBM developed the original version of SQL, originally called Sequel, as part of the System R project in the early 1970s. The Sequel language has evolved since then,
and its name has changed to SQL (Structured Query Language).
In 1986, the American National Standards Institute (ANSI) and the International Organization for Standardization (ISO) published an SQL standard, called
SQL-86. ANSIpublishedanextendedstandard for SQL, SQL-89, in 1989. The next version
of the standardwas SQL-92 standard, followed by SQL:1999, SQL:2003, SQL:2006,
and most recently SQL:2008. (查看原文)
还没人写过短评呢