The SQL databases vs NoSQL databases [Difference]

SQL databases: SQL databases use structured query language (SQL) for defining and manipulating data. On one hand, this is extremely powerful: SQL is one of the most versatile and widely-used options available, making it a safe choice and especially great for complex queries.

NoSQL databases: NoSQL databases have dynamic schemas for unstructured data, and data is stored in many ways: They can be column-oriented, document-oriented, graph-based or organized as a KeyValue store. This flexibility means that,

1. You can create documents without having to first define their structure
2. Each document can have its own unique structure
3. The syntax can vary from database to database, and
4. You can add fields as you go.