Accounting Essay 2 pages must answer all questions
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romney_ais14_stppt_20.pptxAccounting Information Systems
Fourteenth Edition
Chapter 20
Introduction to Systems Development and Systems Analysis
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Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Learning Objectives
Explain the five phases of the systems development life cycle, and discuss the people involved in systems development and the roles they play.
Explain the importance of systems development planning, and describe the types of plans and planning techniques used.
Discuss the various types of feasibility analysis, and calculate economic feasibility using capital budgeting techniques.
Explain why system changes trigger behavioral reactions, what form this resistance to change takes, and how to avoid or minimize the resulting problems.
Discuss the key issues and steps in systems analysis.
Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Systems Development Life Cycle (SDLC)
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Chapter 20: Introduction to Systems Development and Systems Analysis
Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Who Is Involved in the SDLC?
Information Systems Steering Committee
Executive level, plans and oversees IS function; facilitates coordination with integration of systems activities
Project Development Team
Plan and monitor project progress
Programmers
Write and test programs according to analysts specifications
Systems Analysts
Determine information needs, prepare specifications for programmers
Management
Get users involved in the process, provide support for development projects, align projects to meet organizations strategic needs
Users
Communicate needs to system developers, help design and test to ensure complete and accurate processing of data
Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Systems Development Planning
Proper planning provides for achieving goals and objectives
For systems development, two plans needed:
Project Development Plan
Specific to a project and authored by the project team identifies people, hardware, software, and financial resources needed
Master Plan
Long-range and authored by steering committee outlining prioritized projects and timetables
Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Planning Techniques
Program evaluation and review technique (PERT)
Diagram that depicts all project activities that require time and resources with completion estimates. Determines critical path.
Gantt chart
Bar chart that organizes activities on the left hand side and project time scheduled with a bar drawn to show the progress to date for that particular activity.
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Business Case (Feasibility Analysis)
Economic
Do benefits of new system justify the costs (time and resources) to implement?
Technical
Can we use existing technology?
Legal
Does a new system comply with regulations, laws, and contractual obligations?
Scheduling
Can the system be developed in the time allotted?
Operational
Do we have the people to design and implement the system? Will people use the new system?
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Capital Budgeting
Payback period
Calculate the number of years required for the net savings to equal the initial cost of investment
Net Present Value (NPV)
Estimate future cash flows with discounted rate for time value of money
Internal Rate of Return (IRR)
Calculates the interest rate that makes the present value of total costs equal to the present value of total earnings
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Why Behavioral Problems Occur?
Fear
Of failure, the unknown, losing status
Lack of top-management support
If the top management is not supportive why should the employee change?
Bad prior experiences
Bad experience with prior IS changes
Poor communication
Employees need to understand why change is necessary
Disruption
Additional requests for information and additional burdens of time is distracting and prompts negative feelings
Manner change is introduced
Approaches are different for top level and lower level employees
Biases and emotions
Personal characteristics and background
Age
Open to technology and comfortable with it
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Chapter 20: Introduction to Systems Development and Systems Analysis
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How to Prevent Behavioral Problems
Management support
Provide resources and motivation
Satisfy user needs
Involve users
Participation improves communication and commitment
Reduce fears, emphasize opportunities
Avoid emotionalism
Provide training
Performance evaluation
Reevaluate to ensure performance standards are consistent with the new system
Keep open communications
Test the system prior to implementation
Keep system simple
Avoid radical changes
Control user’s expectations
Be realistic
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Phase 1: Systems Analysis
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Key Terms (1 of 2)
Systems development life cycle (SDLC)
Systems analysis
Conceptual design
Physical design
Implementation and conversion
Operations and maintenance
Information systems steering committee
Systems analyst
Computer programmer
Project development plan
Master plan
Program evaluation and review technique (PERT)
Critical path
Gantt chart
Feasibility study
Economic feasibility
Technical feasibility
Legal feasibility
Scheduling feasibility
Operational feasibility
Capital budgeting model
Payback period
Copyright © 2018 Pearson Education, Inc.
Chapter 20: Introduction to Systems Development and Systems Analysis
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Key Terms (2 of 2)
Net present value (NPV)
Internal Rate of Return (IRR)
Behavioral aspects of change
Aggression
Projection
Avoidance
Request for systems development
Initial investigation
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Chapter 20: Introduction to Systems Development and Systems Analysis
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Copyright © 2018 Pearson Education, Inc.
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