"Diffrence between RDBMS, OODBMS and ORDBMS"
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This document provides an overview of different database management systems including DBMS, RDBMS, OODBMS, and ORDBMS. It defines each type of DBMS, their key features, advantages, and disadvantages. DBMS is a collection of programs that enables users to create and maintain databases. RDBMS is based on the relational model and stores data in tables with rows and columns. OODBMS brings object-oriented principles to databases, including object identity, inheritance, and encapsulation. ORDBMS puts an object-oriented front end on an RDBMS to handle new data types like images and video.
"Diffrence between RDBMS, OODBMS and ORDBMS"
- 2. Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring Partner Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
- 3. DBMS • Database is a collection of related data. • Database Management System(DBMS) is a collection of programs that enables users to create and maintain database. • It facilitates the process of • Defining • Constructing • Manipulating • Sharing database
- 4. RDBMS • A Relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model. • Features: • Provides data to be stored in tables • Persists data in the form of rows and columns • Each column is an attribute. • Provides facility primary key, to uniquely identify the rows
- 5. • Relationships are not explicit, but implied by values in specific fields (e.g., foreign keys). • Disadvantages • Do not have enough storage area to handle data such as images, audio, video. • Information must be in tables where relationships between entities are defined by values.
- 6. Object Oriented Database - OODBMS OO principles brought to databases: -New modeling power -Extensibility of systems -Code reuse -Easy maintenance of programs
- 7. • Object Identity-In object oriented databases objects are uniquely identified by OID. • Objects with the same type are grouped into classes. • Classes encompass objects having the same structure and behaviour, which is expressed by the set of methods or operations applicable to the objects they contain.
- 8. • Inheritance: Inheritance is mechanism allowing child object to inherit behavior and properties of parent object. • Encapsulation-A class corresponds to the implementation of an abstract data type (ADT). • Neither the structure of the ADT nor its implementation is visible from the outside world.
- 9. ORDBMS • object relational database management system simply puts an object oriented front end on a relational database (RDBMS). • ORDBMS was created to handle new types of data such as audio,video, and image files . • PostgresSQL is the best known OR DBMS • Supports object-oriented design.
- 10. Advantages of ORDBMS • Resolves many of known weaknesses of RDBMS • It allows users and programmers to start using object-oriented systems in parallel.
- 11. Disadvantages of ORDBMSs • Complexity. • Increased costs. • Supporters of relational approach believe simplicity and purity of relational model are lost. • Some believe RDBMS is being extended for what will be a minority of applications. • OO purists not attracted by extensions either.
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