Which of the following components is NOT typically included in a database management system?

A database management system (DBMS) typically focuses on managing data, allowing users to create, retrieve, update, and delete data efficiently and securely. It encompasses several components designed specifically for these tasks.

The user interface is an essential component that provides users with the means to interact with the database. It can be a graphical interface or a command-line interface that allows for input and visualization of data.

Database design tools are also integral to a DBMS as they assist in defining the structure of the database, including tables, relationships, and data types. These tools enable users to plan and optimize how data will be organized and accessed.

The query processor is a critical component that interprets and executes the commands submitted to the database, enabling users to perform searches and manipulate the data stored within it. This allows for efficient and effective data retrieval and management.

In contrast, while the operating system is essential for running software applications, it is not a component of the DBMS itself. Rather, the DBMS operates on top of the operating system. Therefore, it does not belong to the set of core features and components that define a DBMS.