Business Software and Database Management: Concepts, Applications, and Advantages, Slides of Introduction to Software Engineering

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BUSINESS SOFTWARES

DATABASE

MANAGEMENT

Abu Bakar

BUSINESS SOFTWARES DATABASE MANAGEMENT

INTRODUCTION

SOFTWARES:

Software , also called a program , tells the computer what tasks to perform and how to perform them.  System Software  Operating System  Utilities  Application Software  Games  Spreadsheets  Browsers  Ets. APPLICATION SOFTWARE SYSTEM SOFTWARE HARDWARE

SOFTWARES INSTALLATION:

Installing is the process of setting up software to work with the computer, printer, and other hardware  Install  Run  USE

Disadvantages of File Processing:

 Program-Data Dependence

All programs maintain metadata for each file they use

 Duplication of Data

Different systems/programs have separate copies of the same data

 Limited Data Sharing

No centralized control of data

 Lengthy Development Times

Programmers must design their own file formats

 Excessive Program Maintenance

80% of information systems budget

EXAMPLE - File Processing:

EXAMPLE - DATABASE:

DBMS Order Filling System Invoicing System Payroll System CENTRAL DATABASE

• Employee
• Order
• Inventory
• Pricing
• Customer

Advantages of DATABASE:

 Central Repository of Shared Data  Data is Managed by a Controlling Agent  Stored in a Standardized, Convenient Form  Program-Data Independence  Improved Data Consistency  Improved Data Accessibility & Responsiveness