Cassandra Database is open source distributed database system which is powered by the Apache which is designed for storing and managing large amounts of data across commodity servers. Cassandra Database is responsible for run both a real-time operational data store for online transactional applications and a read-intensive database for large-scale business intelligence systems. The Cassandra Database is Originally created for Facebook and also designed for peer-to-peer symmetric nodes, instead of master or named nodes, to ensure there can never be a single point of failure. Cassandra Database automatically partitions data across all the nodes in the database cluster, but the administrator has the power to determine what data will be replicated and how many copies of the data will be created.