UNIT – I (Introduction to Database Management Systems)

1.1. Introduction:

Data:  Data is raw facts which can be stored and recorded.  The data consist of facts such as text, graphics, images, video and audio segments which gives more meaning to the user environment. 

 Ex. S.No, Name, marks, address . . .  

Information: Information is processed data. Information helps to improve the knowledge of a person who is using the data.                                    

 Ex: Vinod is 20 years old .    

Data Base: A database is a collection of interrelated data for an organization. 
Ex:      College Database, Aadhar Database etc

            Data base is represented by this symbol

Data Base Management System: A database management system (DBMS) is a collection of programs that enables users to create and maintain a database. The DBMS is hence a general-purpose software system that facilitates the processes of defining, constructing, manipulating, and sharing databases among various users and applications.