名师推荐feasibility可行性

● The Role of the IT Department in Project Evaluation
– Management leadership and information technology are linked closely, and remarkable changes have occurred in both areas
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Overview of Feasibility
● A systems request must pass several tests, called a feasibility study, to see whether it is worthwhile to proceed further
● Operational Feasibility
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Setting Priorities
● Factors that Affect Priority
– Will the proposed system reduce costs? Where? When? How? How much?
– Will the system increase revenue for the company? Where? When? How? How much?
– Internal and external factors affect every business decision that a company makes, and IT systems projects are no exception
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Information Systems Projects
– Many smaller companies rely on one person to evaluate system requests instead of a committee
– The goal is to evaluate the requests (feasibility test) and set priorities
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Preliminary Investigation Overview
● Planning the Preliminary Investigation
– Refers to the technical resources needed
● Economic Feasibility
– Total cost of ownership (TCO) – Tangible benefits – Intangible benefits
● Schedule Feasibility
● In this phase, you will learn how IT projects get started and how a systems analyst evaluates a proposed project and determines its feasibility(可行性)
● /english/a_about/a0 1_profile/a0104_business.htm
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Strategic Planning
Figure 2-4
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Strategic Planning
Figure 2-4
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Strategic Planning – A Framework for IT Systems Development
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Strategic Planning – A Framework for IT Systems Development
● Strategic planning is the process of identifying long-term organizational goals, strategies, and resources
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Information Systems Projects
● Main Reasons for Systems Projects
Systems request – Improved service – Support for new
products and services – Better performance – More information
– Will the system serve customers better? – Will the system serve the organization better?
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Setting Priorities
● Factors that Affect Priority
– Can the project be implemented in a reasonable time period? How long will the results last?
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Information Systems Projects
● Main Reasons for Systems Projects
– Stronger controls
• Encryption and biometric devices
– Reduced cost
● Factors that Affect Systems Projects
Figure 2-12
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Evaluation of Systems Requests
● Systems Review Committee
– Most large companies use a systems review committee to evaluate systems requests
● External Factors
– Technology – Suppliers
• (JIT)
– Customers
• Customer Relationship Management (CRM)
– Competitors
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Information Systems Projects
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Introduction
● The term business case refers to the reasons, or justification, for a proposal
● A strong business case suggests that the company should pursue the alternative, above other options, because it would be in the firm’s best interest to do so
● Even if the request is feasible, it might not be necessary
● Feasibility analysis is an ongoing task that must be performed throughout the systems development process
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Setting Priorities
● Discretionary(可有可無） and Nondiscretionary（強制的） Projects
– Projects where management has a choice in implementing them are called discretionary projects
● Systems Requests Forms
– A properly designed form streamlines the request process and ensures consistency
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Evaluation of Systems Requests
● Systems Requests Forms
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Setting Priorities
● Factors that Affect Priority
– Will the systems project result in more information or produce better results? How? Are the results measurable?
● Internal Factors
– Strategic plan – Top managers – User requests – Information
technology department – Existing systems
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Information Systems Projects
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Examples of mission statements
Describes a company for its stakeholders and briefly states the company’s overall purpose, products, services, and values.
– Projects where no choice exists are called nondiscretionary projects
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Preliminary Investigation Overview
● Preliminary investigation ● Interaction with Managers and Users
– Operational feasibility means that a proposed system will be used effectively after it has been developed
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Overview of Feasibility
● Technical Feasibility
– Means that a project can be implemented in an acceptable time frame
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Evaluating Feasibility
● The first step in evaluating feasibility is to identify and weed out systems requests that are not feasible
– Are the necessary financial, human, and technical resources available?
– Whenever possible, the analyst should evaluate a proposed project based on tangible costs and benefits that represent actual (or approximate) dollar values
Systems Analysis & Design Sixth Edition
Chapter 2
System Planning
Analyzing the Business Case
Phase Description
● Systems planning is the first of five phases in the systems development life cycle (SDLC)
● External Factors
– Economy – Government
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Evaluation of Systems Requests
● Systems review committee or a computer resources committee evaluate systems projects
● Strategic Planning Overview
– SWOT analysis
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Strategic Planning – A Framework for IT Systems Development
● From Strategic Plans to Business Results
– Mission statement – Goals – Objectives