System Analysis & Design
- 2. Introduction Systems development is systematic process which includes phases such as planning, analysis, design, deployment, and maintenance. Here, in this presentation, we will primarily focus on − Systems analysis Systems design
- 3. Systems Analysis It is a process of collecting and interpreting facts, identifying the problems, and decomposition of a system into its components. System analysis is conducted for the purpose of studying a system or its parts in order to identify its objectives. It is a problem solving technique that improves the system and ensures that all the components of the system work efficiently to accomplish their purpose. Analysis specifies what the system should do.
- 4. Need for System Analysis System Objective System Boundaries System Importance Nature of the System Role of the System as an Interface Participation of Users Understanding of Resource Needs Assessment of Feasibility
- 5. Phases of System Analysis Analysis Phase Fact Finding Phase Interview Questionnaire Onsite Observation Structured Phase Data Flow Diagram Data Dictionary Decision Tree Decision Table Structured English ER Diagrams
- 6. System Analysis Activities Analysis of the Organizational Environment Analysis of Any Present Systems System Requirements Analysis
- 7. Systems Design It is a process of planning a new business system or replacing an existing system by defining its components or modules to satisfy the specific requirements. Before planning, you need to understand the old system thoroughly and determine how computers can best be used in order to operate efficiently. System Design focuses on how to accomplish the objective of the system.
- 8. Objectives of System Design Support Business Activities Ensure that User Requirements are Met Provide Ease of Use Specify the Logical Design Elements Provide Software Specification Conform to Design Standards
- 9. System Design Methods System Design Methods Problem Partitioning Structured Design Top – Down Design
- 10. Stages of System Design Logical/Conceptual/External Design Physical/Detailed/Internal Design
- 11. System Analysis and Design System Analysis and Design (SAD) mainly focuses on − Systems Processes Technology