Structured Query Language, commonly abbreviated to SQL and pronounced as “sequel”, is not a conventional computer programming language in the normal sense of the phrase. It allows users to access data in relational database management systems. SQL is about data and results, each SQL statement returns a result, whether that result be a query, an update to a record or the creation of a database table. SQL is most often used to address a relational database, which is what some people refer to as a SQL database.So in brief we can describe SQL as follows: