# Q

- [Query Language](/glossary/q/query-language.md): A computer language used to make queries into databases and information systems.
- [Query Parameters](/glossary/q/query-parameters.md): Query parameters are key-value pairs that follow the question mark in the URL.
- [Queue](/glossary/q/queue.md): A collection of entities that are maintained in a sequence and can be modified by the addition of entities at one end of the sequence and the removal of entities from the other end.