Logical, Logical, Physical designPhysical designAnd IPO/HIPO And IPO/HIPO
chartschartsBy- By-
Sabal SharmaSabal Sharma
Vishal BeotraVishal Beotra
System Analysis and Design System Design
IntroductionIntroduction• 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
Relationship between logical Relationship between logical and Physical Designand 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
The Relationship between Logical and The Relationship between Logical and Physical DesignPhysical 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
• The systems analyst must understand the logical design of the system before beginning the physical design of any one component
IPO/ HIPO ChartsIPO/ 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
Purpose: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
HIPOHIPO• 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
HIPO DiagramHIPO Diagram
System Analysis and Design System Design
IPO overview diagramIPO overview diagram
System Analysis and Design System Design
IPO Detailed DiagramIPO Detailed Diagram
System Analysis and Design System Design
Dilbert’s Boss: Lazy system Dilbert’s Boss: Lazy system AnalystAnalyst
