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, yet they work together to provide a unified view of the data. One of the main advantages of distributed databases is their ability to handle large volumes of data and user requests efficiently. They can also enhance data availability and fault tolerance, meaning that if one part of the system fails, the rest can continue to function without interruption.