What does a "Query" represent in database terms?

A "Query" in database terms is a request for data or actions involving data. It is a precise instruction that tells the database management system (DBMS) what information to retrieve or what operations to perform on the data. Queries are used to perform various functions, such as retrieving specific records, updating existing entries, deleting certain rows, or inserting new data.

In relational databases, Queries are predominantly written in SQL (Structured Query Language), which allows users to specify exactly what they need—whether it's a subset of data from a table or a complex manipulation involving multiple tables—and how that data should be presented. This capability is central to managing and extracting valuable insights from data stored in databases.

Understanding what a query does is fundamental to working with databases, as it is the primary means through which users interact with stored data to meet their specific needs.