INTRODUCTION OF DBMS

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                                      DATA BASE MANAGEMENT SYSTEM

DATA :  Data is the collection of raw, unorganized facts and detail like text, observation, figures, symbols and description of things.

* In other words data does not carry any specific purpose and has no significance b itself.

* Moreover data is measured in terms of all bits and bytes -which are basic unit of information in the context of computer storage and processing.

* Data can be recorded and does not have any meaning unless processed

  • TYPE OF DATA
  1. Quantitative :  Numerical form  
                                    weight, volume, cost of an item.

      2. Qualitative  :  Descriptive, but not numeric ,Name, gender, hair color of a person 

               What is information ?

  • Information is processed organized and structure data.
  • It provide context of the data and enables decision making.
  • Processed data that make sense to us .
  • Information is extracted from the data by analyzing and interpreting pieces of data .
  • Example: You have data of all the people living in your locality its data when you analyze once interpet the data and come conclusion .
  1. There are 100 senior citizens.
  2. The sex ratio is 1:1.
  3. New born babies are 100.
  • DATA VS INFORMATION        
                             DATA                                                                       INFORMATION  
  1.  Data is a collection of facts.                           *   Information puts those facts into text .
  2. While data is raw and unorganized                 *  Information is organized.
  3. Data points are individual and                         *  Information maps out that data provide a                                               sometimes unrelated.                                          picture view of how it all fits together.
  4. Data does not depend on information              *  However information depends on data.
  5. Data typically comes in the form of graphs     * Information is typically presented through words                                   numbers, or statics.                                             , language , thought , and ideas .
  • WHAT IS DATA BASE ? 
  1. Database is an electronic place/system where data is stored in away that it can be easily accessed managed and update .
  2.  To make a real use data we need Data base management system (DBMS).
  • WHAT IS DBMS?      
  1. A database management system (DBMS) is a collection of interrelated data and set of programs to access those data.
  2. The collection of data usually referred  to as the data base contains information to an enterprise .
  3. The primary goal of a DBMS is to provide away to store data and retrieve information that is both conventient and efficient.
  4. A DBMS is the database itself along with all the software and functionality.
  5. It is use to perform different operation like addition, access, updating, and deletion of the data.

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