NoSQL motivation

A NoSQL database does not entity relation model for data storage, manipulation, and retrieval. NoSQL databases are often distributed, open source, and horizontally scalable. NoSQL often adopts the base model, which prizes availability over consistency, and informally guarantees that if no new updates are made on a data item, eventually all access to that data item will return the latest version of that data item. The advantages of this approach include the following:

• Simplicity of design
• Horizontal scaling and easy replication

• Schema-free
• A huge amount of data support

We will now explore a few types of NoSQL databases.