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Program and System Design 2023-2024

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Questions and Answers

What is the primary reason for the continued importance of program design techniques in project teams' reliance on packaged software or preprogrammed code?

To understand, organize, and piece together preexisting code (correct)

To minimize the role of project teams in system development

To eliminate the need for writing any new code

To automate the process of building systems

What is the purpose of logical Data Flow Diagrams (DFDs) during system analysis?

To indicate how the system will actually be implemented

To outline the steps for creating physical DFDs

To provide details about physical process models

To describe processes and data flows needed for the new system's functional requirements (correct)

What distinguishes a physical Data Flow Diagram (DFD) from a logical DFD?

It excludes rules like balancing and decomposition

It contains additional details describing how the system will be built (correct)

It focuses solely on functional requirements

It omits data stores and data flows

What is not contained in logical Data Flow Diagrams (DFDs) for a to-be system?

<p>Indication of how the system will actually be implemented when built</p> Signup and view all the answers

What do physical process models created during design aim to show?

<p>Implementation details and how the final system will work</p> Signup and view all the answers

Study Notes

Program Design Techniques

The primary reason for the continued importance of program design techniques is that even with packaged software or preprogrammed code, project teams still need to design how these components fit together and interact.

Data Flow Diagrams (DFDs)

The purpose of logical Data Flow Diagrams (DFDs) during system analysis is to model the flow of data through a system, focusing on what the system does, without considering how it will be implemented.

Logical vs. Physical DFDs

A physical Data Flow Diagram (DFD) differs from a logical DFD in that it shows how the system will be implemented, including the physical components and architecture.

Logical DFDs

Logical Data Flow Diagrams (DFDs) for a to-be system do not contain implementation details, such as hardware or software specifications.

Physical Process Models

Physical process models created during design aim to show how the system will operate, including the physical components, and how they will interact.

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Description

Test your knowledge about program design techniques and the importance of system design in project teams. Explore the role of packaged software, libraries, and original code in building systems.