What does SQL stand for and what is its primary use?

SQL stands for Structured Query Language, and its primary use is for managing and manipulating relational databases. This means that SQL provides a standardized way to create, read, update, and delete data stored in a relational database management system (RDBMS). It enables users to execute complex queries to retrieve specific data, alter existing data, and manage database structures through a set of predefined commands.

Relational databases organize data into tables that can be linked based on relationships among the data, making SQL an essential tool for database administrators, developers, and data analysts. The language's design allows it to handle large volumes of data efficiently and to ensure data integrity, making it vital in contexts where data management is crucial, such as enterprise applications, data warehousing, and more.

The other options do not correctly define SQL or its primary use. Managing and manipulating files does not capture the essence of relational databases, and calling it "Standard Query Language" or "Simple Query Language" misrepresents both the name and functionality of SQL. Furthermore, its primary purpose is not focused on web development or text file processing, which are outside the scope of SQL's intended use.