1. Overview of a Database Management System

1.2. Categories of Database Management Systems (DBMS)

 Database management systems are categorised according to their data structures and types. Well known types are relational, hierarchical, and object-oriented.

 

1. Database Management System (RDBMS)

 The Relational database management system organises data in tabular files. Most modern Database Management Systems (Oracle, Sybase, and Microsoft SQL Server) are relational databases. These databases support a standard language - SQL (Structured Query Language).

 

2. Hierarchical Database Management System (RDBMS)

 This category of database management system stores data in a tree-like structure.

 

3. Object-Oriented Database Management System (RDBMS)

The Object-Oriented database management system stores objects as opposed to tuples or records in a RDBMS.

DBMSs are categorized according to their data structures or types.