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Questions and Answers
Who is primarily responsible for program design in the Software Development Life Cycle (SDLC)?
In which phase of the SDLC does program design occur?
Which of the following is NOT a task performed by analysts during program design?
What is one of the actions analysts take when transitioning from logical design to physical design?
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Physical data flow diagrams (DFDs) are primarily shared with which group?
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What is the first step in creating a Physical Data Flow Diagram?
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Which step focuses on establishing a clear boundary between human interaction and automated processes?
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During the process of creating a Physical Data Flow Diagram, what is the third step?
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Which of the following is NOT part of adding implementation references when converting logical DFDs into physical DFDs?
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What is the fourth step in creating a Physical Data Flow Diagram?
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Study Notes
Program Design Overview
- Program design is typically handled by analysts who create specifications passed to programmers for coding.
- In the Software Development Life Cycle (SDLC), program design occurs during the Design phase.
- Analysts engage in various tasks, establishing how components will fit together and creating data flow diagrams (DFDs).
- Program design includes the visual representation of logic and structure, employing tools and methodologies.
Analysts' Responsibilities in Program Design
- Analysts determine program requirements and create instructions for programmers.
- Activities include identifying how code components interact and adapting logical DFDs into physical DFDs.
- The creation of structure charts and program specifications is essential for effective development.
- Analysts do not directly develop the database schema; this is typically handled at another level.
Transition from Logical to Physical Design
- As analysts move to physical design, physical DFDs are developed to illustrate the system with real triggers and processes.
- The transition necessitates creating physical representations of DFDs and other necessary documentation.
Steps in Creating a Physical Data Flow Diagram (DFD)
- First Step: Add implementation references to incorporate system details.
- Second Step: Draw the human-machine boundary to delineate user interactions.
- Third Step: Include data stores, data flows, and processes relevant to the system.
- Fourth Step: Update data elements in the flows to reflect implementation specifics.
- Fifth Step: Metadata in the CASE repository is revised to ensure all information is accurate and integrated.
Implementation References in DFDs
- Adding implementation references does not involve developing user interface links for metadata; this aspect is managed differently.
- Analysts focus on how databases will be physically implemented and structures for process execution.
Understanding the Human-Machine Boundary
- The human-machine boundary represents the interface between users and the system, including devices like keyboards and screens.
- This boundary is grounded in ergonomic research to enhance user experience and efficiency.
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Description
Test your knowledge of the Software Development Life Cycle (SDLC) and the role of program design within it. This quiz covers key concepts, phases, and responsibilities in software development, focusing on the relationship between analysts and programmers.
