Difference between Relational Database Management System (RDBMS) and Non-Relational Database Management System (NoSQL)

Relational Database Management System (RDBMS) and Non-Relational Database Management System (NoSQL) are two different types of databases with distinct characteristics and use cases.

Key Differences:

• RDBMS stores data in tabular form with structured relationships between tables using SQL queries.
• NoSQL databases store data in flexible, schema-less formats like key-value pairs, documents, wide-column stores, or graph databases.
• RDBMS provides ACID (Atomicity, Consistency, Isolation, Durability) compliance, ensuring data integrity.
• NoSQL databases offer high scalability, availability, and performance for big data and real-time applications.

Scenario Selection:

Choosing between RDBMS and NoSQL depends on the specific requirements of your project:

• RDBMS Usage:
• When data structure is fixed and relationships between data entities are well-defined.
• For transactional applications that require strong consistency and data integrity.
• Vertical scaling is sufficient to handle the workload.
• NoSQL Usage:
• For big data and real-time applications where horizontal scaling and high availability are crucial.
• When the data structure is evolving and schema flexibility is required.
• When rapid development and deployment are prioritized over strict data consistency.