10 Questions
Which of the following is NOT one of the four feasibility tests used to measure the operational feasibility of a system development project?
User satisfaction feasibility
Which of the following is NOT typically included in the documentation collected during the system development cycle?
Gantt charts
Which of the following data and information gathering techniques involves a structured meeting where the system requirements are defined collaboratively?
Joint-application design (JAD) session
Which of the following is NOT a common reason for creating or modifying an information system?
To increase profitability
What is the primary function of the steering committee in the planning phase of the system development cycle?
To review and approve project requests
Which of the following is NOT a key component of the analysis phase of the system development cycle?
Designing the user interface
In the context of the system development cycle, which of the following is considered a formal request for a new or modified information system?
A request for system services
Which of the following is NOT a common data and information gathering technique used in the analysis phase of the system development cycle?
Regression analysis
Which of the following is the MOST important consideration when evaluating the feasibility of a system development project?
Operational feasibility
Which of the following is NOT a typical deliverable produced during the documentation phase of the system development cycle?
Gantt charts
Study Notes
System Development Cycle
- Conducts preliminary investigation (feasibility study) to determine problem or improvement and worth pursuing
- Presents findings in feasibility report
Preliminary Investigation (Feasibility Study)
- Determines exact nature of problem or improvement and whether it's worth pursuing
- Finds and presents in feasibility report
Detailed Analysis
- Studies how current system works
- Determines user's wants, needs, and requirements
- Recommends solution, also known as logical design
Process Modeling
- Describes processes that transform inputs into outputs
- Also called structured analysis and design
- Uses three tools: entity-relationship diagrams, data flow diagrams, and project dictionary
Entity-Relationship Diagram (ERD)
- Graphically shows connections between entities in system
Data Flow Diagram (DFD)
- Graphically shows flow of data in system
Project Dictionary
- Contains all documentation and deliverables of project
- Helps keep track of huge amount of details in system
- Uses techniques: structured English, decision tables, decision trees, data dictionary
Object Modeling
- Combines data with processes that act on data into single unit called an object
- Uses Unified Modeling Language (UML) for documenting system
Use Case Diagram
- Graphically shows how actors interact with information system
- Actor: user or other entity
- Use case: function that actor can perform
Class Diagram
- Graphically shows classes and subclasses in system
- Class: group of objects
- Subclass: lower level of class
System Proposal
- Assesses feasibility of each alternative solution
- Recommends the most feasible solution for the project
- Presented to steering committee
Feasibility Tests
- Four types: schedule, economic, technical, operational
- Measure of how suitable system development will be to the company
System Development Cycle
- Initiates with request for system services or reasons to create/modify an information system
- Six data and information gathering techniques: review documentation, observe, questionnaire, interview, joint-application design (JAD) session, research
Planning Phase
- Begins when steering committee receives project request
- Functions: review and approve project requests, prioritize, allocate resources, form project development team
Test your knowledge on preliminary investigation and detailed analysis, including understanding the nature of a problem, determining user requirements, and recommending solutions.
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