Aravali college of Engineering and Management, Faridabad (8)

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Aravali College of
Engineering and Management, Faridabad

• Department of Computer Science
  Engineering(July Dec 2020)

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Logical, Physical design And IPO/HIPO charts
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Introduction

• Starts with the planning of a new system
• Designing is not a single phase of SDLC
• Design is always happening
• You collect info, then Design, collect more info
  from feedback and Design again.

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Relationship between logical and Physical Design

• The logical design defines the functions and
  features of the system and the relationships
  among its components
• Logical design done during the system analysis
  phase

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The Relationship between Logical and Physical
Design

• The physical design of an information system is a
  plan for the actual implementation of the system
• The physical design is built on the systems
  logical design and describes a specific
  implementation
• System design usually begins after completing
  system analysis phase
• Some overlap is possible, you might return to
  fact-finding if you discover that you overlooked
  an important issue, if user have significant new
  needs, or if legal or governmental requirements
  change

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• The systems analyst must understand the logical
  design of the system before beginning the
  physical design of any one component

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IPO/ HIPO Charts

• Developed by IBM
• To understand structure and functions of systems
• To provide easily understandable description of
  various parts of system

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Purpose

• to define procedures and operations in a
  hierarchical manner, correlating input,
  processing, and output steps with the integrated
  whole expressed in the hierarchy diagram.

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HIPO

• A HIPO package consists of a hierarchy chart and
  IPO overview diagram and IPO detail diagram
• Hierarchy Chart
• IPO Chart
• IPO detailed chart

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HIPO Diagram
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IPO overview diagram
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IPO Detailed Diagram
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Dilberts Boss Lazy system Analyst
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Aravali College of Engineering And
Management Jasana, Tigoan Road, Neharpar,
Faridabad, Delhi NCR Toll Free Number 91-
8527538785 Website  www.acem.edu.in