The document discusses the relationship between logical and physical design in system analysis and design, noting that the logical design defines system functions and components while the physical design implements the specific system, and that IPO/HIPO charts can be used to understand a system's structure and functions in a hierarchical manner by correlating its input, processing, and output steps.

1. Logical,
Physical design
And IPO/HIPO
charts
By-
Sabal Sharma
Vishal Beotra

2. 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.
System Analysis and Design
System Design

3. 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
System Analysis and Design
System Design

4. 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 system’s 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
System Analysis and Design
System Design

5. • The systems analyst must understand the logical design of the
system before beginning the physical design of any one
component
System Analysis and Design
System Design

6. IPO/ HIPO Charts
• Developed by IBM
• To understand structure and
functions of systems
• To provide easily understandable
description of various parts of
system
System Analysis and Design
System Design

7. 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.
System Analysis and Design
System Design

8. HIPO
• A HIPO package consists of a hierarchy chart and IPO
overview diagram and IPO detail diagram:
– Hierarchy Chart
– IPO Chart
– IPO detailed chart
System Analysis and Design
System Design

9. HIPO Diagram
System Analysis and Design
System Design

10. IPO overview diagram
System Analysis and Design
System Design

11. IPO Detailed Diagram
System Analysis and Design
System Design

12. Dilbert’s Boss: Lazy system
Analyst