A Presentation on

“Database Management System”

Presented by:

Haris BB133082

Muzammil BB133100

Junaid BB133037

Mujtaba BB133019

Jabar BB133038

M.A.J.U

What is Database

• collection of programs that enables you to

store and extract information from a

database

• created to operate large quantities of

information by inputting, storing, retrieving,

and managing

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Examples of Database

Applications

• computerized library systems

• automated teller machines

• flight reservation systems

• computerized parts inventory systems

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STEPS IN DATABASE DESIGN

• Requirement analysis

− What does the user want?

• Conceptual database design

− Defining the entities and attributes, and

the relationships between these --> The

ER model

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ER-Diagram

Functions of a Database Management

System

• several functions that a DBMS performs to

ensure data integrity and consistency of

data in the database

• Ten functions in the DBMS are:

− Data Dictionary Management

− Data Storage ManagementM.A.J.U

Functions of a Database Management

System

− Data Transformation and Presentation

− Security Management

− Multiuser Access Control

− Backup and Recovery Management

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Functions of a Database Management

System

− Data Integrity Management

− Database Access Languages and

Application Interface

− Database Communication Interfaces

− Transaction ManagementM.A.J.U

Role of Database Management

System

• interaction between end-user and the

database

• create an environment in which end users

have better access to more data

• Database is stored as a collection of files

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DBMS benefits

• Occupies minimum storage space

• No unnecessary data

• Easy to update

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Data Management Task

• Data management task fall into one or four

general options

− Storage space

− Backup strategy

− Speed

− Processing scheme

Database Tables

• Creating database tables

− Name the field

− Specify the field type

− Specify the field size

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Database Tables

• Entering data in tables

− After the tables has been set up, data

can be entered by

• Viewing records

• Sorting recordsM.A.J.U

Querying a Database

• Allow the DBMS to locate records

• Establish relationship

• List a subset of records

• Perform calculations

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Querying a Database

• Delete obsolete records

• Perform other data management task

Field Types of DBMS

• Text field

• Numeric field

• Time field

• Logical field

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Field Types of DBMS

• Binary field

• Counter field

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ORDBMS

• object-relational database management

systems.

• How DBMS accessed languages:

− directly using programming languages

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RDBMS VS ORDBMS

• Stands for

– Relational database management

system

– Object-relational database management

systems

• Difference between RDBMS and

ORDBMS

– They are both database management

systems

– RDBMS has to do extra work while

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DB2 database management

• DB2 database management : that was

introduced by IBM in 1983.

• Editions of DB2 :

– DB2Workgroup

– DB2 Workgroup Unlimited

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DB2 database management

–DB2 Enterprise Server Edition

–DB2 UDB Data Warehouse

Enterprise Edition (DWE)

• DB2 has APIs for many languages

including the following.

–Java

–C

–C++M.A.J.U