Database System
At its core, a Database Management System (DBMS) acts as an intermediary between the user and the raw data stored on a computer. It is software that handles the creation, retrieval, and management of data.

The Database vs. The DBMS
- Database: The actual collection of data (like a digital filing cabinet).
- DBMS: The software that manages that data (like the librarian who organizes and finds the files for you). Examples: MySQL, PostgreSQL, Oracle, MongoDB.