Which database system runs as a server providing multi-user access?

The database system that runs as a server providing multi-user access is MySQL. It is designed to operate in a client-server architecture, allowing multiple users to connect simultaneously and interact with the database. As a relational database management system (RDBMS), MySQL efficiently handles requests from various clients through network connections, supporting concurrent transactions and ensuring data integrity.

MySQL is widely used in web applications and enterprise environments where multiple clients need to read from and write to the database. It provides functionalities such as user authentication, access control, and transaction management, making it suitable for multi-user scenarios.

In contrast, while options like MongoDB and PostgreSQL also support multi-user access, SQLite operates differently by being an embedded database that doesn't run as a standalone server. Instead, it runs in the application process and is typically used by a single user at a time or in scenarios where concurrent access is minimal.