Advantages of Apache Cassandra

* It is scalable, fault-tolerant, and consistent.

* It is a column-oriented database.

* Its distribution design is based on Amazon’s Dynamo and its data model on Google’s Bigtable.

* Created at Facebook, it differs sharply from relational database management systems.

* Cassandra implements a Dynamo-style replication model with no single point of failure, but adds a more powerful “column family” data model.

* Cassandra is being used by some of the biggest companies such as Facebook, Twitter, Cisco, Rackspace, ebay, Twitter, Netflix, and more.

Advantages of CouchDB for Big Data

Why CouchDB?

* CouchDB have an HTTP-based REST API, which helps to communicate with the database easily. And the simple structure of HTTP resources and methods (GET, PUT, DELETE) are easy to understand and use.

* As we store data in the flexible document-based structure, there is no need to worry about the structure of the data.

* Users are provided with powerful data mapping, which allows querying, combining, and filtering the information.

* CouchDB provides easy-to-use replication, using which you can copy, share, and synchronize the data between databases and machines.

Advantages of Big Dat

Advantages of Big Data:

1.Access to large volume of data.
2.Allows businesses to develop more effective strategies towards competitors in less time.
3.Improve Decision making capabilities.
4.Can analyse data easily.
5.Allows businesses to detect errors and fraud quickly. 
6.Offers businesses a chance to improve profits and customer service.
7.Integration of both structured and unstructured data.
8.Implementing new strategies and improve service dramatically.