There are four main types of DBMS (Database Management Systems), each designed to handle data differently based on structure and use cases. The Hierarchical DBMS organizes data in a tree-like structure with parent-child relationships, best suited for applications with clear hierarchy. Network DBMS allows more complex relationships through a graph-like model, where a child can have multiple parents—useful in systems like telecom and transport. The Relational DBMS (RDBMS) is the most popular, organizing data in tables with rows and columns, making it easier to manage and query with SQL. Finally, Object-Oriented DBMS stores data as objects, similar to programming languages like Java and C++, ideal for applications with complex data types. Each type serves different needs, and understanding them helps in choosing the right DBMS for specific projects or organizations. From simple data storage to complex relationships, every DBMS type has its role in modern computing.