Introduction to SQL
What is SQL?
SQL stands for Structured
Query Language. It is pronounced either as 'sequel' or simply as the letters
'S-Q-L'. SQL is a language that has been specially designed for
communicating and interacting with database. It is governed by the ANSI
(American National Standards Institute) standards committee and is often
referred to as ANSI SQL. Some DBMS (database management system) vendors have
added their own statements or instructions to the language to provide extra
functionality, but we will be concentrating on standard ANSI SQL which
should work across most major databases without any modifications.
As a language, SQL is
relatively simple yet deceptively powerful. The simple statements used
disguise a very powerful language that allows you to perform many varied and
complex database operations. |
