Welcome back, Sujit Kumar Mishra

What are the databases which you have worked on till now? 

1: MySQL

MySQL is an open-source database that is widely used for websites and applications. It’s known for being fast, reliable, and easy to set up.

2: Oracle

Oracle Database is a powerful and secure database used by many big organizations. It supports large-scale applications and offers advanced features for managing data.

3: SQL Server

SQL Server is developed by Microsoft. It’s commonly used in business environments and integrates well with other Microsoft products.

4: MongoDB

MongoDB is a NoSQL database, which means it stores data in a flexible, document-based format (like JSON). It’s great for handling large volumes of data that don’t always fit into tables.

5: PostgreSQL

PostgreSQL is an open-source database known for its advanced features and flexibility. It supports complex queries and is highly reliable for both small and large projects.

In summary, MySQL, Oracle, SQL Server, and PostgreSQL are traditional databases that use tables (SQL), while MongoDB is a modern database that uses documents (NoSQL).