International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Query is an ad-hoc reporting tool that allows the users' to retrieve data that is stored in the application. It gives users the ability to produce a report of information from a database. The word 'Query' may be defined as retrieval of meaningful information. The language used to provide various manipulations like retrieval of information that is already available within the database, insertion of new information into the database, deletion of information from the database and modification of data stored in the database is referred to as 'DML' (Data Manipulation Language). A subset of the DML that is used for writing a query is called a 'Query Language'.