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The Systems Development Life Cycle

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Presentation on theme: "The Systems Development Life Cycle"— Presentation transcript:

1 The Systems Development Life Cycle
Planning Product: Feasibility Study Understand the Business Problem or Opportunity Develop an Information System Solution Systems Analysis Product: Functional Requirements Systems Design Product: System Specifications Implement the System Solution Systems Implementation Product: Operational System Systems Maintenance Product: Improved System

2 Project Example: Data flow in the public schools.
Hypothesis: If data on absences, tardiness, quiz and test scores, etc. were more immediately available to parents, administrators, and students, motivation and learning would increase. Proposal: connect an interactive voice response system to the existing database at the schools. Give parents 24 hour access via their telephones and a password.

3 Planning. Investigation: Is there really a problem here? Feasibility study: organizational, economic, and technical.

4 System Request Lists key elements of the project Project name
Project sponsor Business need Functionality Expected value Special issues or constraints

5 Feasibility Analysis Detailing Expected Costs and Benefits
Technical feasibility Economic feasibility Organizational feasibility

6 Technical Feasibility: Can We Build It?
Familiarity with application Knowledge of business domain Familiarity with technology Extension of existing firm technologies Project size Number of people, time, and features

7 Economic Feasibility Should We Build It?
Benefits Development costs Operational costs Totals

8 Expected Value Costs Benefits Tangible Intangible *

9 Cash Flow Method for Cost Benefit Analysis

10 Return on Investment Calculation
RETURN ON INVESTMENT EQUALS Total (benefits - costs) Divided by Total costs

11 Organizational Feasibility If we build it, will they come?
Stakeholder analysis Project champion(s) Organizational management System users


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