This article explores the differences between NoSQL and SQL databases. They start with a brief description of the databases and then the various pros and cons of each type of database. This article also explores the differences in the applicability of the two types of databases. SQL refers to a domain-specific or standardized programming language used by database developers when designing and managing relational SQL databases or managing data stored in an RDSMS. The scope of a SQL database covers querying data, defining data (creating and modifying a schema), manipulating data (inserting, deleting, and updating), and data access control. NoSQL databases are not relational and can coexist with relational databases.