What is a distributed database?

A distributed database is a database system that is spread across multiple physical locations or computers, known as nodes, that communicate with each other to store and manage data. The nodes in a distributed database system can be located in the same building or in different parts of the world, connected over a network.

The primary purpose of a distributed database is to provide scalability, high availability, and improved performance. By spreading the data across multiple nodes, a distributed database can handle larger amounts of data and higher numbers of concurrent users than a single centralized database.

In a distributed database system, each node has a copy of a portion of the data, and the data can be divided and stored based on various criteria, such as geographical location, data type, or customer. Queries can be executed on one node or multiple nodes, depending on the specific needs of the application.

Examples of distributed databases include Apache Cassandra, Amazon DynamoDB, and MongoDB.

 

 

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