Introduction to SQL
The Structured Query Language (SQL) is a standard programming language to access and manipulate databases. SQL allows the user to create, retrieve, alter, and transfer information among databases. It is a language designed for managing and accessing data in a Relational Data Base Management System (RDBMS).
There are many versions of SQL. The original version was developed at IBM’s Research centre and originally called as Sequel in early 1970’s. Later the language was changed to SQL. In 1986, ANSI (American National Standard Institute) published an SQL standard that was updated again in 1992, the latest SQL was released in 2008 and named as SQL 2008.