what is query language

 A query language is a computer programming language used to communicate with a database or other data storage systems to retrieve, update, and manage data.

Query languages are designed to be more user-friendly and intuitive than traditional programming languages, allowing users to specify their requests for data in a more natural and expressive way. A query language can be thought of as a way to ask a database questions about its contents, and receive answers in a structured format.

Some common query languages include SQL (Structured Query Language), which is used to interact with relational databases, and SPARQL (SPARQL Protocol and RDF Query Language), which is used to query data stored in RDF (Resource Description Framework) format, typically used for semantic web data.

In summary, a query language allows users to interact with a database or other data storage system in a structured way, allowing them to retrieve and manipulate data according to their specific needs.