Podcast
Questions and Answers
What is the primary goal of the analysis phase in the System Development Life Cycle?
What is the primary goal of the analysis phase in the System Development Life Cycle?
- To allocate resources and identify the project development team
- To develop programs and install the new system
- To monitor system performance and identify errors
- To perform detailed analysis and determine user requirements (correct)
What is the purpose of a feasibility study in the System Development Life Cycle?
What is the purpose of a feasibility study in the System Development Life Cycle?
- Not mentioned in the text
- To develop clearly defined standards for the system
- To conduct preliminary investigation and review project requests (correct)
- To conduct post-implementation system review
Who is responsible for designing and developing the information system?
Who is responsible for designing and developing the information system?
- The project team
- The systems analyst (correct)
- The IT professionals
- The users of the system
What is the main objective of the planning phase in the System Development Life Cycle?
What is the main objective of the planning phase in the System Development Life Cycle?
What is the role of the project team in the System Development Life Cycle?
What is the role of the project team in the System Development Life Cycle?
What is the primary goal of the implementation phase in the System Development Life Cycle?
What is the primary goal of the implementation phase in the System Development Life Cycle?
What is the purpose of the design phase in the System Development Life Cycle?
What is the purpose of the design phase in the System Development Life Cycle?
What is the role of the systems analyst in the System Development Life Cycle?
What is the role of the systems analyst in the System Development Life Cycle?
What is the primary goal of the support phase in the System Development Life Cycle?
What is the primary goal of the support phase in the System Development Life Cycle?
What is the importance of involving users in the System Development Life Cycle?
What is the importance of involving users in the System Development Life Cycle?
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Study Notes
System Development Life Cycle (SDLC)
- System development measures the suitability of a system to a company based on economic, technical, operational, and schedule feasibilities.
Feasibility Tests
- Economic feasibility (cost/benefit analysis)
- Technical feasibility
- Operational feasibility
- Schedule feasibility
Documentation
- Collection and summarization of data and information
- Includes reports, diagrams, programs, and other deliverables
Data and Information Gathering Techniques
- Review documentation
- Observe
- Questionnaire
- Interview
- Joint-application design (JAD) session
- Research
Reasons to Create or Modify an Information System (IS)
- To correct problems in existing systems
- To improve existing systems
- Outside groups may mandate change
- Competition can lead to change
Planning Phase
- Begins when the steering committee receives a project request
- Steering committee:
- Reviews and approves project requests
- Prioritizes project requests
- Allocates resources
- Forms project development team for each approved project
Analysis Phase
- Conducts preliminary investigation (feasibility study)
- Performs detailed analysis
- Presents findings in a feasibility report
Preliminary Investigation
- Determines the exact nature of the problem or improvement
- Checks if it's worth pursuing
- Presents findings in a feasibility report
Detailed Analysis
- Studies how the current system works
- Determines user wants, needs, and requirements
- Recommends a solution (logical design)
System Proposal
- Assesses feasibility of each alternative solution
- Recommends the most feasible solution
- Presented to the steering committee for system development decisions
Possible Solutions
- Horizontal market software (meets needs of many companies)
- Vertical market software (designed for a particular industry)
- Writing custom software (developed at user's request)
- Outsourcing (having an outside source develop software)
Design Phase
- Acquires hardware and software, if necessary
- Develops all details of the new or modified information system
Acquiring Hardware and Software
- System Development Life Cycle (SDLC)
- Phase 1: Planning
- Phase 2: Analysis
- Phase 3: Design
- Phase 4: Implementation
- Phase 5: Support
Guidelines for System Development
- Arrange tasks into phases
- Involve users
- Develop clearly defined standards
Participants in System Development
- Systems analyst: responsible for designing and developing information systems
- Users: anyone for whom the system is being built
- Project team: develops the system
Feasibility Study
- Determines the exact nature of the problem or improvement
- Checks if it's worth pursuing
- Presents findings in a feasibility report
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