Podcast
Questions and Answers
What is the primary characteristic of the waterfall model in the software development life cycle?
What is the primary characteristic of the waterfall model in the software development life cycle?
- It integrates testing before implementation begins.
- It captures logical relationships between software activities. (correct)
- It allows for frequent changes in requirements during development.
- It emphasizes parallel activities in software development.
Which phase in the waterfall model follows the specification phase?
Which phase in the waterfall model follows the specification phase?
- Testing
- Design (correct)
- Maintenance
- Implementation
In the context of the software product life cycle, what is indicated by the maintenance phase?
In the context of the software product life cycle, what is indicated by the maintenance phase?
- Completion of product testing and sign-off.
- Only minor updates to existing products.
- Product redesign and engineering redesign. (correct)
- The phase where new products are developed.
What is the main focus of engineering design within the software life cycle?
What is the main focus of engineering design within the software life cycle?
How does the waterfall model characterize the relationship between development activities?
How does the waterfall model characterize the relationship between development activities?
What is the primary role of software designers?
What is the primary role of software designers?
How does thinking of design as problem solving provide advantages?
How does thinking of design as problem solving provide advantages?
Which of the following is NOT a focus of design principles in software development?
Which of the following is NOT a focus of design principles in software development?
What defines abstraction in software design?
What defines abstraction in software design?
What is a significant benefit of employing abstraction in problem solving?
What is a significant benefit of employing abstraction in problem solving?
Which statement about design principles is accurate?
Which statement about design principles is accurate?
What is one method suggested in problem-solving during design?
What is one method suggested in problem-solving during design?
What characteristic is NOT a goal of abstraction in software design?
What characteristic is NOT a goal of abstraction in software design?
What is a key distinction between requirements and design activities?
What is a key distinction between requirements and design activities?
What is the primary purpose of modeling in design?
What is the primary purpose of modeling in design?
Why is the traditional way to distinguish between requirements and design considered inadequate?
Why is the traditional way to distinguish between requirements and design considered inadequate?
What is typically the first step to address design problems?
What is typically the first step to address design problems?
Which modeling approach begins by solving an abstract version of a problem?
Which modeling approach begins by solving an abstract version of a problem?
Which of the following best describes a static design model?
Which of the following best describes a static design model?
Which of the following is NOT a solution generated by the design process?
Which of the following is NOT a solution generated by the design process?
What role do constraints play in the software design process?
What role do constraints play in the software design process?
What can lead to a failure of a model?
What can lead to a failure of a model?
Which of the following is an example of a dynamic model?
Which of the following is an example of a dynamic model?
What does 'SRS' stand for in the context of design solutions?
What does 'SRS' stand for in the context of design solutions?
What is the last step depicted in the design process?
What is the last step depicted in the design process?
In modeling, which purpose focuses on understanding a problem?
In modeling, which purpose focuses on understanding a problem?
How do design interactions contribute to the overall design process?
How do design interactions contribute to the overall design process?
Which strategy involves solving parts of a problem and connecting them for a complete solution?
Which strategy involves solving parts of a problem and connecting them for a complete solution?
How do models function effectively in design?
How do models function effectively in design?
What is a primary function of a software design method/tool?
What is a primary function of a software design method/tool?
Which of the following is a component of design methods?
Which of the following is a component of design methods?
What do design heuristics provide in software design?
What do design heuristics provide in software design?
What do the SOLID principles in software design aim to improve?
What do the SOLID principles in software design aim to improve?
Which of the following is an example of a design pattern?
Which of the following is an example of a design pattern?
What is the focus of abstraction in software design?
What is the focus of abstraction in software design?
Which of the following is NOT considered a design practice?
Which of the following is NOT considered a design practice?
What does the term 'Design Notations' refer to in software design?
What does the term 'Design Notations' refer to in software design?
What is the primary purpose of decomposition in software design?
What is the primary purpose of decomposition in software design?
Which design practice is focused on protecting the integrity of data within an object?
Which design practice is focused on protecting the integrity of data within an object?
What is one of the main benefits of following established design practices?
What is one of the main benefits of following established design practices?
Which concept is described as a fundamental design technique?
Which concept is described as a fundamental design technique?
What is the role of documentation and modeling in software design?
What is the role of documentation and modeling in software design?
What effect do design principles have on code quality?
What effect do design principles have on code quality?
Which design method was introduced first in the timeline provided?
Which design method was introduced first in the timeline provided?
How can software design be characterized?
How can software design be characterized?
Flashcards
Software Design
Software Design
The act of specifying the design of a software product to meet client needs, considering limitations.
Design as Problem Solving
Design as Problem Solving
Viewing design as a problem-solving process, which often involves multiple solutions.
Design Principles
Design Principles
Fundamental guidelines used to create well-structured, maintainable, and efficient software systems.
Abstraction
Abstraction
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Importance of Abstraction
Importance of Abstraction
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Abstraction: Filtering Unnecessary Information
Abstraction: Filtering Unnecessary Information
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Waterfall Model
Waterfall Model
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Software Product Life Cycle
Software Product Life Cycle
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Requirements Specification
Requirements Specification
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Design
Design
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Implementation
Implementation
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Decomposition
Decomposition
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Top-Down Strategy
Top-Down Strategy
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Bottom-Up Strategy
Bottom-Up Strategy
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Model
Model
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Modeling in Design
Modeling in Design
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Static Design Model
Static Design Model
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Dynamic Design Model
Dynamic Design Model
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Model Limitations
Model Limitations
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Software Design Method
Software Design Method
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Design Process
Design Process
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Design Notations
Design Notations
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Design Heuristics
Design Heuristics
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Design Practices
Design Practices
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SOLID Principles
SOLID Principles
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Design Patterns
Design Patterns
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What vs. How in Software Development
What vs. How in Software Development
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Problem with 'What' vs. 'How'
Problem with 'What' vs. 'How'
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Requirements vs. Design: Problem Solving
Requirements vs. Design: Problem Solving
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Software Design Problem
Software Design Problem
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Software Design Solution: Features and Capabilities
Software Design Solution: Features and Capabilities
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Software Design Solution: Interactions
Software Design Solution: Interactions
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Software Design Solution: SRS (Software Requirements Specification)
Software Design Solution: SRS (Software Requirements Specification)
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High-Level Design Document
High-Level Design Document
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Encapsulation
Encapsulation
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Documentation and Modeling
Documentation and Modeling
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Why Design Practices Matter
Why Design Practices Matter
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Design Method Timeline
Design Method Timeline
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Software Design Process
Software Design Process
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Study Notes
Software Design Principles and Practices
- Software design is crucial for creating efficient, maintainable, and scalable software systems.
- Software design is viewed as a problem-solving activity
- Design principles are fundamental guidelines, aiming to make software easy to understand, flexible, and resilient to changes.
- Key aspects of design include abstraction, modeling, and decomposition.
- Abstraction simplifies problems by focusing on essential details, ignoring non-critical aspects.
- Modeling involves creating representations of target systems, enabling clear visualizations and relationships.
- Decomposition breaks down complex systems into smaller, more manageable parts.
- Types of design models include static models (representing unchanging program aspects during execution) and dynamic models (representing actions during execution).
- Examples of static models are class and object models.
- Examples of dynamic models are state diagrams and sequence diagrams.
- Software products are entities comprising programs, data, supporting materials, and services catering to client needs.
- Design methods use design principles, design heuristics (rules guiding achievement of certain outcomes), processes (tasks leading to outputs), and notations (symbolic representations).
- Software design encompasses both product design (emphasizing features, capabilities, and interfaces to meet client requirements) and engineering design (concentrating on programs, sub-systems, and constituent components to comply with product specifications).
- Product design primarily focuses on the requirements specification phase, while engineering design is centered around the design and implementation phases.
- Established design practices, techniques, and guidelines result in high-quality software, and improved software maintainability.
- Design principles aid in developing well-structured, reliable, and easy-to-work-with code.
Design Method Components
- Design Process: Collection of tasks transforming inputs into outputs.
- Design Notations: Symbolic representation system.
- Design Heuristics: Rules providing guidance for achieving outcomes.
- Design Methods also use design principles stating characteristics of designs that make them better or worse.
Design Practices
- Encompasses established approaches, techniques, and guidelines used to create maintainable, scalable, efficient software systems.
- Key elements include SOLID principles (guidelines for writing object-oriented code), design patterns (well-known solutions solving design problems, e.g., Singleton, Factory, Observer), architectural patterns (high-level patterns structuring entire applications, e.g., MVC, Microservices), and processes and techniques (e.g., abstraction, decomposition, encapsulation, documentation, and modeling).
Why Design Practices Matter
- Crucial for creating well-structured, easy-to-test, and maintainable software adapting well to changes.
- Result in the development of higher-quality software with fewer errors.
Design Method Timeline
- Key milestones in software design methods include:
- 1971: Stepwise refinement (Niklaus Wirth)
- 1974: Structured design (Stevens, Myers, Constantine)
- Late 1970s-Early 1980s: Structured analysis and design methods
- Late 1980s: Object-oriented methods
- 1995: UML 0.8 release
- 2004: UML 2.0 release
Summary
- Software Design is important and thought of as problem solving.
- Abstraction and Modeling are fundamental.
- Design is both product and engineering.
- Product design mostly during requirements; engineering design during design and implementation.
- Object-oriented analysis and design methods are now commonplace.
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