In this research work, broad categories of NoSQL data storage i.e. Column-oriented, Document- based, Graph-based and Key-value are compared. Several research works have compared real solutions of NoSQL data storage such as Cassandra, MongoDB, Neo4J or DynamoDB. Real solutions are compared based on very narrow features. In this research work, broad NoSQL storage categories are compared based on various characteristics such as storage, application area, advantages, flexibility, performance and scalability. Readers can select broad categories based on their specific applications by exhaustive comparison in this research work. Furthermore, the most popularly used real solutions from 120 solutions are selected in this research work. The reason for selecting these real solutions is to compare based on scalability, storage and applications. It is observed that query languages for NoSQL are not standardized due to different storage structures of NoSQL data storage techniques. Different data storage techniques use its own query languages.

.