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SYSTEM ANALYSIS AND DESIGN

SYSTEM ANALYSIS AND DESIGN. Topics to include.. WHAT IS SAD? NEED FOR SAD ROLE OF THE SYSTEM ANALYST QUALITIES OF SYSTEM CHARACTERISTICS FEASIBILITY ANALYSIS IMPORTANT CONCEPTS. WHAT IS SAD? System: A set of detailed methods, procedures and

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SYSTEM ANALYSIS AND DESIGN

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  1. SYSTEM ANALYSIS AND DESIGN

  2. Topics to include.. • WHAT IS SAD? • NEED FOR SAD • ROLE OF THE SYSTEM ANALYST • QUALITIES OF SYSTEM • CHARACTERISTICS • FEASIBILITY ANALYSIS • IMPORTANT CONCEPTS

  3. WHAT IS SAD? System: A set of detailed methods, procedures and routines established to carry out specific activity, solve a problem or to perform a duty. System Analysis: The survey and planning. The study and analysis. The definition. System Design: The process of defining the architecture, components, modules, interfaces and data for a system. BACK

  4. NEED FOR SAD • Installing a system without proper planning leads to great user dissatisfaction and frequently cause the system to fall into disuse. • Lends structure to the analysis and design of information systems. BACK

  5. ROLE OF THE SYSTEM ANALYST • The analyst plays a key role in information systems development projects. • Must understand how to apply technology to solve business problem. BACK

  6. QUALITIES OF SYSTEM ANALYST • Communicator • Strong Personal and Professional Ethics • Self Disciplined and Self Motivated BACK

  7. CHARACTERISTICS OF SYSTEM • A component: • An irreducible part or aggregation of parts that make up a system, also called a subsystem • Interrelated components: • Dependence of one subsystem on one or more subsystems • Boundary: • The line that marks the inside and outside of a system and that sets off the system form its environment

  8. Purpose • The overall goal or function of a system • Environment • Everything external to a system that interacts with the system • Interface • Point of contact where a system meets its environment or where subsystems meet each other. BACK

  9. BACK

  10. FEASIBILITY ANALYSIS • Technical Feasibility: Can we build it? • Economic Feasibility: Should we build it? • Organizational Feasibility: If we build it, will they come? BACK

  11. IMPORTANT SYSTEM CONCEPTS • There are several other system concepts with which systems analysts need to become familiar: • Decomposition • Modularity • Coupling • Cohesion

  12. Decomposition: The process of breaking down a system into smaller component. Modularity: Dividing a system up into chunks or modules of a relatively uniform size. To Simplify the redesign and rebuild process. Coupling: The extend to which subsystems depend on each other. Cohesion : A cohesion is the extent to which a subsystem performs a single function. BACK

  13. SUMMARY • Information is a key source. • System analysts deal with many types of information systems. • Qualities of SA. • The SDLC. • Feasibility Analysis. BACK

  14. THANK YOU BACK

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