Database Management Systems by Raghu Ramakrishnan & Johannes Gehrke (3rd Edition

🏗️ Types of DBMS

1. Hierarchical DBMS – Data organized in a tree-like structure.

2. Network DBMS – Allows many-to-many relationships using graph structure.

3. Relational DBMS (RDBMS) – Data stored in tables (rows & columns). Most common today.

4. Object-Oriented DBMS (OODBMS) – Data represented as objects, like in programming.