What is the difference between SQL and NoSQL databases?

SQL (Structured Query Language) and NoSQL (Not Only SQL) are two different types of database management systems that serve different purposes and have distinct characteristics.

SQL Databases:

• SQL databases are relational databases that store data in tables with rows and columns.
• They use SQL for querying and manipulating data.
• They enforce a predefined schema, which means the structure of the database is fixed.
• ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in SQL databases.

NoSQL Databases:

• NoSQL databases are non-relational databases that store data in flexible and schema-less formats like JSON, XML, etc.
• They use various query languages or APIs for accessing and manipulating data.
• They do not enforce a predefined schema, allowing for flexibility and scalability.
• NoSQL databases do not always guarantee ACID properties, but provide high availability and scalability.

Overall, the choice between SQL and NoSQL databases depends on the specific requirements of the project, such as data structure, scalability, and performance needs.