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What is Database?

Before going to tell about what is database I would like to demonstrate what is data?.

DATA:
A fact can be recorded called data. For example music, speech, video, image, text, number these all are called as data.

DATABASE:
 The collection of related data called database. For example 
  • Collection of Text(Text1,Text2,Text3,...etc)
  • Collection of Image(Image1,Image2,Image3,....etc)
  • Collection of Video(Video1,Video2,Video3,....etc)
  • Collection of Speech(Speech1,Speech2,Speech3,....etx)
  • Collection of Number(Number1,Number2,Number3,...etc)
There is a lot of databases maintained by many companies or government for some specific data. It may about text content only or video content only or image content only and etc.

TYPES OF DATABASE:
  • TDB(used for storing only text content)
  • GIS(used in the satellite for taking pictures from space and send back)
  • RDB(used in the production line)
  • DW(storing data for future)
and so on

DATABASE MANAGEMENT SYSTEM(DBMS):

It is a set of programs that can be defined(Datatype), constructs (How are you going to place the data on the storage device), manipulate(updating, deleting, adding into a database).

WHY WE NEED DBMS?

Actually, a database running using the system. So we can easily set a button for the database to OS(Operating System). But here the problem is whenever we are calling the database from the system first thing it will call the OS and then OS will call the database. Which means OS will change user mode to console mode(From OS we can access the database only in console mode )So that it will take so much time for booting. But we are expecting speed. 

In this case DBMS(A software)using for accessing database form the OS.

WHAT IS DATABASE SYSTEM?

A database system is the combination of DB(Database) and DBMS(Database Management System).


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