Structured Query Language (SQL)

Structured Query Language (SQL) is a high level language for the implementation of relational databases. SQL is based on the relational algebra of Dr. E. F. Codd [1], but it does not strictly follow Codd's system. Typical SQL commands include [2]:

• SELECT
• UPDATE
• INSERT
• DELETE

References:

[1] http://www.seas.upenn.edu/~zives/03f/cis550/codd.pdf

[2] http://www.w3schools.com/sql/default.asp