The biggest decision while selecting a database is to select a relational (SQL) or non-relational (NoSQL) data structure. While the databases are viable options, they still possess certain key differences that users must keep in mind when arriving at a decision.
As both the databases have their advantages as well as disadvantages, choosing between SQL and NoSQL depends entirely on individual circumstances. SQL databases are long-established with a fixed schema design and structure. They are perfect for applications that demand multi-row transactions like accounting systems or legacy systems that are developed for a relational structure.
Since NoSQL doesn’t have a rigid schema they are quite flexible, Simple to use, and most importantly, easily scalable. Applications like CMS, Real-time Analytics, and big data applications which have no specific schema definitions are ideal for NoSQL.