Database is well organized collection of data and
information which can be reused later when required. It is the set of
collection of data that is organized in specific order and that can be easily
accessed, managed, updated and computation. The collection of data related to
any subject or purpose so, it is known as database. It is data collection which stored on physical
media such as magnetic disks, optical disks etc.In census ,data related to
people are collected to know population, literate percentage etc.The database
has its own importance. It stores data, saves data from being lost, save time
while entering, accessing, protects data from unauthorized access and
users. E.g. Phone Diary. Database is a
set of data. Data in database is stored in tables .Relational tables are
defined by their Columns and are given a name. Data is then stored as rows in
the table. Tables can be related to each other, and the database can be used to
enforcethis relationships.
Types of
Database:
* Conventional
Database:
Collection of data without use of computer. E.g. Telephone diary, register.
* Computerized
database: The
collection of data with the help of computer in the form of data file is known
as computerized database. The types of computer systems that can run database
management system are Centralized PC and Client/Server and distributed.
Importance of
Database:
Ø Large volume of data can be stored in small
area.
Ø Computerised database save time while
entering and altering the data.
Ø Computerised database save time while
searching or accessing data.
Ø Database can store and save data for the long
period.
Ø Computerised database save data from being
lost.