A database server is a specialized computer system that stores, manages, and provides access to databases. It allows multiple users and applications to retrieve and manipulate data efficiently. Database servers use a database management system (DBMS) to handle tasks such as data storage, security, and backup. These servers can be accessed over a network, enabling users to interact with the data remotely. Common types of database servers include relational databases like MySQL and PostgreSQL, as well as NoSQL databases like MongoDB. They play a crucial role in various applications, from websites to enterprise software.