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An Overview of Database

Management

Group # 11NAVEED AHMED KHAN

MUHAMMAD OBAIDULLAH KHAN

SYED WAQAS SHAFI

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An Overview of Database

Management

Database

A database is just a collection of data that

is used by application system of enterprise.

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An Overview of Database

ManagementIntroduction

A database system is basically just a

computerized record –keeping system.

The data base itself can be regarded as a kind

of electronics filing cabinet

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An Overview of Database

ManagementWe can say it is a container for a collection of computerized

data files – 

User of a system can perform a variety of operation on such

files - For example:

Adding new files to the database

Inserting data into existing files

Retrieving data into existing files

changing data into existing files

Deleting data into existing files

Removing existing files from the database

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An Overview of Database

ManagementWhat is a Database System?

A Database system is a computerized system

whose overall purpose is to store information

and allow users to retrieve and update that

information on demand

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An Overview of Database

ManagementComponents of Database

Management System

Data

Hardware

Software & 

User

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An Overview of Database

Management

Components of Database

Management SystemData

Data is the all

information thathas to be share orintegrated

HardwareIt consist of;• Secondary

storage• The hardwareProcessor(s)

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An Overview of Database

ManagementComponents of DatabaseManagement System

SoftwareThe database

management system

are operated by a

software that handle

overall operation of the

database

User• First, there are

application

programmers,

responsible for writing

database applications• Second, users are

end user, who interact

with the system from

online workstations or

terminals.

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An Overview of Database

Management

Database Management

System

Application

ProgramsEnd users

Database

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An Overview of Database

ManagementWhy Database?

Compactness: There is no need for possibly

voluminous paper files

Speed: The Machine can retrieve and

update far faster than a human can.

Less Drudgery: Less Labor required

Accuracy: Accurate, up-to-date information is

available on demand at any time

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An Overview of Database

ManagementBenefits of Database?

The data can be shared

Redundancy can be reduced

Inconsistency can be avoided (to some extent)

Transaction support can be provided

Contd… 

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An Overview of Database

Management

Benefits of Database?

Integrity can be maintained

Security can be enforced

Conflicting requirements can be balanced

Standards can be enforced

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An Overview of Database

Management

Thank You