A distributed database is a type of database that is spread across multiple locations, which can be on different servers or even in different geographical areas. This setup allows data to be stored and accessed from various points, improving reliability and performance. Each location can operate independently, but they work together to provide a unified view of the data. One of the main advantages of a distributed database is its ability to handle large volumes of data and user requests efficiently. It can also enhance data availability, as the system can continue to function even if one part fails. Technologies like NoSQL and cloud computing often utilize distributed databases to manage data effectively.