object oriented database management system pdf

This is the most popular DBMS type in the market. Relational DBMS usually have pre- defined data types that they can support. Unlike network DBMS, RDBMS does not support many to many relationships.  Relational DBMS - this type of DBMS defines database relationships in the form of tables, also known as relations. RDM Server is an example of a database management system that implements the network model. This usually results in complex database structures.  Network DBMS - this type of DBMS supports many-to-many relations. Configuration settings are stored as tree structures with nodes. The windows registry used in Windows XP is an example of a hierarchical database. Its structure is like a tree with nodes representing records and branches representing fields. This type of DBMS is rarely used nowadays.  Hierarchical - this type of DBMS employs the 'parent-child' relationship of storing data. Types of Databases There are 4 major types of DBMS. In other words, a database management system is a combination of hardware and software that can be used to set up and monitor a database and can manage the updation and retrieval of the database that has been stored in it. It also defines rules to validate and manipulate this data. A DBMS generally manipulates the data itself, the data format, field names, record structure, and file structure. Database Management System A database management system (DBMS) is a software package designed to define, manipulate, retrieve and manage data in a database.

Object oriented database management system pdf