Database Management System | Computer XI

Database Management System | Computer XI

 

Data : It is raw fact and figure about person , place , event or thing which can be recorded in computer in the form of number , text , pictures , audio , video etc. Example Meropaper , 30 , hello world etc.

Information : It is the processed value which we get after processing by the computer . Example : I am 14 years old,I am a student etc.

Database : It is the well defined collection of data . Example : telephone directory , dictionary etc.

DBMS(Database Management System) : It is the collection of program that enables users to create and maintain database . Example : Ms. Access , Oracle , FoxPro etc.

Objectives of DBMS :

(i) To provide storage area for mass amount of relevant data .

(ii) To make access to the data easy for the end user.

(iii) To eliminate data redundancy .

(iv) To allow the growth of database .

(v) Protecting data against unauthorized access.

Advantages of DBMS :

(i) To make easy to add new data , modify the database and delete existing data .

(ii) Organize the data in proper sequence .

(iii) Eliminate the data redundancy of data.

(iv) Protecting data against unauthorized access .

(v) Allow the growth of database system .

Disadvantages of DBMS :

(i) Cost of purchasing a developing software .

(ii) Chances of losing data  .

(iii) Chances of data leakage and hacking .

(iv) Cost of sharing data .

(v) Requires trained manpower .

RDBMS( Relational Database Management System ) :

The DBMS which is used to manage and manipulate the data in relational database model is called RDBMS . It is reducing data redundancy . Example : SQL Server , Oracle etc.

Advantages :

  • Support for very large database .
  • It is very useful in data redundancy .
  • Automatic optimization of searching .
  • Uniform security and privacy enough password .
  • View and automatic backup .

Some useful links : Define Computer Architecture and Computer Organization (Grade 11).

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Hemant

Hemant Chaudhary is an student 19 years old. He is interested in Hacking, Blogging,coding. He like to Visit new Places and make new Friends. He used to Learn His web works From Friends and Currently is is CEO and Founder of Meropaper and meroreview.com