Question

NoSQL databases can store relationship data—they just store it differently than relational databases do. How would you describe the differences between a relational database and a NoSQL database? What do you see as the business advantages that a NoSQL database has over a relational database?

Answer 1

Solution: With the advent of the internet as well as the improvements in the field of information systems technology millions of GBs of data are generated each and every day. With such big data, there arises the challenges of storing and managing such amount of data and two such techniques to store and manage the data efficiently are SQL and NoSQL, the differences between them are discussed in brief down below:

1. An SQL based database system is a relational database system while the NoSQL database system is a non-relational database system or a distributed system.
2. A SQL database store the data in the form of tables, while the NoSQL database stores the data in the form of key-value pairs, documents, or even in the form of a graph.
3. A SQL based database system can be administered using the structured query language while a NoSQL database can be administered on the basis of the structure of the database system.
4. A SQL based database system is vertically scalable while a NoSQL is horizontally scalable.

The main advantage of NoSQL based database systems over the SQL based database systems in a real-time business scenario is that the NoSQL based systems actually support both the structured as well as the unstructured data while the SQL based systems only support the structured format of data. Since this is an era of big data and the most of data that gets generated each and every day over the internet is of the unstructured format and hence if you would have to use the SQL based system then it would require a lot of preprocessing over the data to store it in the form of a tabular format while this time is effort can be cut down when you are making use of the NoSQL database systems in the business scenario.

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