A database query is a request for information from a database. It is a command or statement used to retrieve or manipulate data stored in a database using a specific syntax and language, such as SQL (Structured Query Language).
A database query can be used to perform various operations, such as searching for specific data, sorting data, grouping data, joining data from multiple tables, and updating or deleting data in a database. The query is written in a specific syntax that is understood by the database management system, and it returns the requested data in a specified format.