Database Management System (DBMS)

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Presentation transcript:

Database Management System (DBMS)

What is DBMS? Database Management System is a software that is meant for storing records in computers. This software allows accessing of data such as delete, store, retrieve etc that are available in a database.

History During early days, for storing data a file system is used. In a file system, it is difficult to access data, data inconsistency, integrity and security problems etc. So database management system was first developed on 1960 by Charles Bachman. Database Management System provides many solutions for problems that are occurred in a file system.

Architecture

Types of DBMS Hierarchical DBMS Network DBMS Relational DBMS A hierarchical DBMS are established in such a way that one data item is present as the subordinate of another one or a sub unit. Network DBMS If the relationships among data in the database are of type many-to- many, then it is network DBMS. Relational DBMS A relational DBMS is the database relationships, which are treated in the form of a table. Object-oriented DBMS Able to handle many new data types, including graphics, photographs, audio, and video, object-oriented databases represent a significant advance over their other database cousins.

Areas of DBMS Airlines: Used for storing information such as availability of seats, train timings etc. Banking: Used to store customer details, accounts, transaction etc. Telecommunication: For storing bills, caller names etc.

Areas of DBMS Universities: To store students register no., marks etc. Human Resources: For storing employee details, salary etc. Sales: Helps to store customer information, purchases etc.

Advantages Faster access to information Cost for user training is low Multiple usages at a time No dependence in language High data security Eliminates data redundancy Consistency in data

Disadvantages Slightly expensive Requires trained technical employee for operation Damage in database deletes all data forever Data conversion is very costly and difficult Organization has to spend more amounts for training a staff to operate DBMS

Conclusion The goal of database management system is to offer more convenience as well as more efficiency to access data from a database with high security. Therefore, nowadays Database Management System is used in all fields for gaining more advantages.

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