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  1. 1. Logical,Physical designAnd IPO/HIPO charts By- Sabal Sharma Vishal Beotra
  2. 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. 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. 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. 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. 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. 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. 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. 9. HIPO Diagram System Analysis and Design System Design
  10. 10. IPO overview diagram System Analysis and Design System Design
  11. 11. IPO Detailed Diagram System Analysis and Design System Design
  12. 12. Dilbert’s Boss: Lazy system Analyst

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