STRUCTURED QUERY LANGUAGE AND OTHER QUERY LANGUAGES

A query language is a set of commands to create, update and access data from a database allowing users to raise adhoc queries / questions interactively without the help of programmers. A structured query language (SQL) is a set of thirty (30) English like commands which has since become an adoptable standard. The structured query language syntax use some set of commands regardless of the database management system software like ‘Select’, ‘From’, ‘Where’. For example, after ‘Select’ a user lists the fields, after ‘From’ the names of the files/group of records containing these fields are listed, after ‘Where’ conditions for search of the records are listed.