Podcast
Questions and Answers
What is a key advantage of the evolutionary approach in software development?
What is a key advantage of the evolutionary approach in software development?
- It permits incremental delivery of the system. (correct)
- It allows for immediate full system implementation.
- It eliminates all risks associated with software development.
- It ensures complete customer involvement at all stages.
Why is the spiral model considered a meta model?
Why is the spiral model considered a meta model?
- It is the most cost-effective development model.
- It is the simplest model for development.
- It covers and integrates all other life cycle models. (correct)
- It incorporates planning and execution phases.
What primary factor may deter the use of the spiral model in ordinary projects?
What primary factor may deter the use of the spiral model in ordinary projects?
- High upfront costs.
- Limited application to small projects.
- Inherent complexity of the model. (correct)
- Lack of customer involvement.
How does incremental development benefit customers financially?
How does incremental development benefit customers financially?
What role do system analysts play in the software development process?
What role do system analysts play in the software development process?
What is a common consequence of protracted development processes?
What is a common consequence of protracted development processes?
What risk does the spiral model inherently address?
What risk does the spiral model inherently address?
How does the evolutionary approach differ from monolithic approaches?
How does the evolutionary approach differ from monolithic approaches?
What is the primary focus during the first quadrant of the spiral model?
What is the primary focus during the first quadrant of the spiral model?
Which quadrant of the spiral model involves developing and validating the product?
Which quadrant of the spiral model involves developing and validating the product?
What is a key characteristic of the spiral model?
What is a key characteristic of the spiral model?
What is a limitation of the classical waterfall model?
What is a limitation of the classical waterfall model?
In which scenario is the prototyping model particularly useful?
In which scenario is the prototyping model particularly useful?
Why might the spiral model be avoided in ordinary projects?
Why might the spiral model be avoided in ordinary projects?
What does the iterative waterfall model overcome that the classical waterfall model does not?
What does the iterative waterfall model overcome that the classical waterfall model does not?
Which life cycle model is noted for being the most widely used?
Which life cycle model is noted for being the most widely used?
In which situation is a prototype considered most useful?
In which situation is a prototype considered most useful?
What is the primary characteristic of the Evolutionary Model?
What is the primary characteristic of the Evolutionary Model?
What is a significant disadvantage of the Evolutionary Model?
What is a significant disadvantage of the Evolutionary Model?
In the Spiral Model, what does each loop represent?
In the Spiral Model, what does each loop represent?
Which of the following is NOT a characteristic of the Spiral Model?
Which of the following is NOT a characteristic of the Spiral Model?
What type of projects is the Evolutionary Model particularly suited for?
What type of projects is the Evolutionary Model particularly suited for?
What should an analyst aim to remove from the initial customer perception of a problem?
What should an analyst aim to remove from the initial customer perception of a problem?
What is a key advantage of using a prototype during product development?
What is a key advantage of using a prototype during product development?
Which of the following is a critical question for the analyst to understand the project?
Which of the following is a critical question for the analyst to understand the project?
Which model is primarily used when user requirements are not clearly defined?
Which model is primarily used when user requirements are not clearly defined?
The functional requirements of a system are primarily concerned with what aspect?
The functional requirements of a system are primarily concerned with what aspect?
Which of these best describes non-functional requirements?
Which of these best describes non-functional requirements?
What is the analyst expected to do when inconsistencies are found in the requirements?
What is the analyst expected to do when inconsistencies are found in the requirements?
Which option best captures the goals of implementation?
Which option best captures the goals of implementation?
What does the term 'data interchange formats' refer to in system analysis?
What does the term 'data interchange formats' refer to in system analysis?
Which of the following is NOT a focus of the functional requirements of a system?
Which of the following is NOT a focus of the functional requirements of a system?
What is a characteristic of a good SRS document?
What is a characteristic of a good SRS document?
Why is a well-structured SRS document important?
Why is a well-structured SRS document important?
What does it mean for an SRS document to have a black-box view?
What does it mean for an SRS document to have a black-box view?
What should be characterized in an SRS document regarding undesired events?
What should be characterized in an SRS document regarding undesired events?
What issue can arise if an organization does not develop an SRS document?
What issue can arise if an organization does not develop an SRS document?
How does an SRS document assist maintenance engineers?
How does an SRS document assist maintenance engineers?
What is one major risk of not having a SRS document?
What is one major risk of not having a SRS document?
Which property ensures that SRS requirements can be validated?
Which property ensures that SRS requirements can be validated?
What is the primary purpose of documenting functional requirements?
What is the primary purpose of documenting functional requirements?
Which of the following best describes the 'Search Book' function in the library system?
Which of the following best describes the 'Search Book' function in the library system?
In the context of the ATM system, what does the 'withdraw-cash' high-level requirement entail?
In the context of the ATM system, what does the 'withdraw-cash' high-level requirement entail?
What does the input data domain for the withdraw amount specify in the ATM system?
What does the input data domain for the withdraw amount specify in the ATM system?
Which sequence of actions corresponds to R1.1 in the ATM withdraw-cash function?
Which sequence of actions corresponds to R1.1 in the ATM withdraw-cash function?
Which aspect is NOT typically included when documenting functional requirements?
Which aspect is NOT typically included when documenting functional requirements?
What type of output does the withdraw-cash function provide when sufficient funds are available?
What type of output does the withdraw-cash function provide when sufficient funds are available?
What is a key concern for developers during the implementation of a system?
What is a key concern for developers during the implementation of a system?
Flashcards
Prototyping Model
Prototyping Model
A software development approach used when technical solutions are unclear. A prototype is created to explore potential issues early on.
Evolutionary Model
Evolutionary Model
A software development model where the system is built incrementally, starting with a simple working model and adding features iteratively until the desired product is complete.
Spiral Model
Spiral Model
A software development model that employs iterative loops for each phase of the project, where risk assessment guides each iteration.
Prototype
Prototype
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Incremental implementation
Incremental implementation
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Risk assessment
Risk assessment
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Feasibility study
Feasibility study
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Requirements specification
Requirements specification
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First Quadrant (Objective Setting)
First Quadrant (Objective Setting)
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Second Quadrant (Risk Assessment and Reduction)
Second Quadrant (Risk Assessment and Reduction)
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Third Quadrant (Development and Validation)
Third Quadrant (Development and Validation)
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Fourth Quadrant (Review and Planning)
Fourth Quadrant (Review and Planning)
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Iterative Waterfall Model
Iterative Waterfall Model
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Circumstances to use the Spiral Model
Circumstances to use the Spiral Model
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Customer Confidence
Customer Confidence
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Requirements Gathering
Requirements Gathering
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System Analyst
System Analyst
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Incremental Development
Incremental Development
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Financial Advantage of Incremental Development
Financial Advantage of Incremental Development
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Customer Trauma
Customer Trauma
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What is the problem?
What is the problem?
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What are the possible solutions?
What are the possible solutions?
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What are the data inputs?
What are the data inputs?
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What are the data outputs?
What are the data outputs?
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Functional requirements
Functional requirements
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Non-functional requirements
Non-functional requirements
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Goals of implementation
Goals of implementation
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Transformations
Transformations
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Withdraw Cash Function (R1)
Withdraw Cash Function (R1)
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Input Data Domain
Input Data Domain
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Output Data Domain
Output Data Domain
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R1.1: Select Withdraw Amount Option
R1.1: Select Withdraw Amount Option
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R1.2: Select Account Type
R1.2: Select Account Type
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R1.3: Get Required Amount
R1.3: Get Required Amount
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Sub-requirements in Functional Requirements
Sub-requirements in Functional Requirements
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SRS Document
SRS Document
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Concise SRS
Concise SRS
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Structured SRS
Structured SRS
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Black-box View
Black-box View
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Conceptual Integrity
Conceptual Integrity
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Response to Undesired Events
Response to Undesired Events
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Verifiable Requirements
Verifiable Requirements
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Problems Without an SRS
Problems Without an SRS
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Study Notes
Waterfall Model
- A sequential, linear approach to software development
- Divides development into distinct phases
- Each phase must be completed before the next can begin
Iterative Waterfall Model
- Overcomes shortcomings of the classical waterfall model
- Involves repeated cycles of the waterfall phases
- Provides feedback paths for error correction
Prototyping Model
- A prototype is a simplified implementation of a system
- Exhibits limited functionality and low reliability
- Useful for understanding user needs and clarifying technical solutions
Evolutionary Model
- Also called successive versions or incremental model
- Builds a simple working model initially
- Subsequently improves functionality incrementally
- Suitable for large projects needing incremental implementation
Spiral Model
- A risk-driven model that combines iterative development with risk analysis
- Consists of multiple iterations, each with a risk assessment phase.
- Employs prototypes to mitigate risks
- Suitable for complex projects with high risks
Requirement Analysis and Specification
- Essential for understanding customer needs before development
- System analysts gather information from the customer to understand requirements and remove ambiguities
- Includes questions like problem definition, solutions, data inputs/outputs, and possible complexities
Part of SRC Document
- Functional requirements of the system
- Non-functional requirements
- Implementation goals
Functional Requirements
- Describes the high-level functions the system performs
- Input data and output data are transformed by each function
Non-Functional Requirements
- Deals with system characteristics not expressed as functions
- Example: maintainability, portability, usability
Properties of a Good SRS Document
- Concise: Unambiguous and to the point
- Structured: Easy to understand and modify
- Black-Box View: Specifies external behavior, not internal details
- Conceptual Integrity: Clear and understandable
- Response to Undesired Events: Handles exceptional circumstances
- Verifiable: Requirements are measurable
Problems Without an SRS Document
- System may not meet customer needs
- Developers lack clarity on requirements
- Maintenance is difficult
- User manuals may be inaccurate
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