Query Language

A query language, often known as a data query language (DQL), is a type of computer language that is used to query databases or information systems and retrieve data. These languages adhere to certain guidelines in databases to locate and retrieve the necessary data. Database management relies heavily on query languages, which serve as tools for retrieving and manipulating data. They are broadly divided into procedural and declarative types. Procedural languages instruct a computer on how to perform tasks step by step. Declarative query languages, on the other hand, put more emphasis on the intended outcome and simply state what you want without describing how to get it. The Structured Query Language (SQL) is one of the most applied current query languages for handling relational databases. Users are able to interact with and manage structured data using this domain-specific language. SQL performs different functions with commands such as "FIND," "INSERT," "DELETE," "ORDER BY," "SUM," and "SELECT". These commands help in defining and updating the database structures as well as data additions and searches. In addition, they establish rules like authorization rules, integrity constraints, triggers, and stored procedures.

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