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What stage in the software engineering process develops an executable software system?
What stage in the software engineering process develops an executable software system?
Software design is primarily a mechanical activity focused solely on coding.
Software design is primarily a mechanical activity focused solely on coding.
False
What is a fundamental principle of open-source development?
What is a fundamental principle of open-source development?
What does COTS stand for in the context of software systems?
What does COTS stand for in the context of software systems?
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Anyone can do whatever they wish with open source code without any restrictions.
Anyone can do whatever they wish with open source code without any restrictions.
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In the object-oriented design process, the first step involves defining the ______ and modes of use of the system.
In the object-oriented design process, the first step involves defining the ______ and modes of use of the system.
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Match the following processes with their common activities:
Match the following processes with their common activities:
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What should be considered during the software development process regarding existing software?
What should be considered during the software development process regarding existing software?
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Which of the following benefits does buying off-the-shelf systems provide?
Which of the following benefits does buying off-the-shelf systems provide?
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In open source licensing, the developer retains ownership of the code and can impose __________ on its use.
In open source licensing, the developer retains ownership of the code and can impose __________ on its use.
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Match the following aspects of software design and implementation with their descriptions:
Match the following aspects of software design and implementation with their descriptions:
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The design process for small systems requires extensive development of models.
The design process for small systems requires extensive development of models.
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What is the purpose of specifying object interfaces in the object-oriented design process?
What is the purpose of specifying object interfaces in the object-oriented design process?
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Which of the following is NOT an element of pattern descriptions?
Which of the following is NOT an element of pattern descriptions?
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Open source development encourages proprietary software practices.
Open source development encourages proprietary software practices.
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What is the most well-known open source product?
What is the most well-known open source product?
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In open source development, the source code of a software system is __________.
In open source development, the source code of a software system is __________.
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Match the open source products with their primary functionalities:
Match the open source products with their primary functionalities:
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What is a crucial aspect of configuration management in software development?
What is a crucial aspect of configuration management in software development?
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Production software typically runs on the same computer as the development environment.
Production software typically runs on the same computer as the development environment.
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What is the primary focus of implementation issues in software development?
What is the primary focus of implementation issues in software development?
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What is the purpose of a system context model?
What is the purpose of a system context model?
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An interaction model is a static model that describes how the system interacts with its environment.
An interaction model is a static model that describes how the system interacts with its environment.
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What is the iterative process in object identification?
What is the iterative process in object identification?
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A design pattern is a way of reusing abstract knowledge about a problem and its ______.
A design pattern is a way of reusing abstract knowledge about a problem and its ______.
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Match the following design model types with their descriptions:
Match the following design model types with their descriptions:
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Which architectural pattern may be used in system component organization?
Which architectural pattern may be used in system component organization?
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Design models only describe the static structure of a system.
Design models only describe the static structure of a system.
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What is an example of a dynamic design model?
What is an example of a dynamic design model?
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Study Notes
Chapter 7 - Design and Implementation
- Software design and implementation is the stage in the software engineering process where an executable software system is developed.
- Software design and implementation activities are invariably inter-leaved.
- Software design is creative, identifying software components and their relationships, based on customer requirements.
- Implementation is realizing the design as a program.
- COTS (off-the-shelf systems) can be adapted to user needs
- Implementing a medical records system as an example, using COTS systems can be faster and cheaper compared to development in a conventional programming language.
- Design using COTS needs understanding of configuration features.
- Structured object-oriented design uses many system models, requiring significant development and maintenance effort, and may not be cost-effective for small systems.
- Large systems developed by different groups rely on design models as communication mechanisms.
- Common activities in object-oriented design processes include defining the system's context, defining modes of use, designing the system architecture, identifying principal objects, creating design models, and specifying interfaces.
- System context models are structural, showing the other systems in the environment.
- Interaction models are dynamic, demonstrating how the system interacts with its environment.
- Architectural design involves identifying major components and interactions.
- Architectural patterns, like layered or client-server, can organize components.
- Object class identification is often difficult
- There's no 'magic formula', relying on the skill, experience, and domain knowledge of system designers.
- Object identification is an iterative process.
- Design models show objects, classes, and relationships.
- Structural models describe the static structure of the system in terms of classes and relationships.
- Dynamic models describe the interactions between objects.
- Examples of design models include subsystem models (logical groupings), sequence models (sequences of interactions), and state machine models (how individual objects react to events).
- Design patterns reuse abstract knowledge of problem and solution.
- A design pattern is a description of the problem and the essence of its solution.
- Patterns should be sufficiently abstract to be reusable.
- Descriptions use object-oriented characteristics like inheritance and polymorphism.
- Pattern elements include a name, problem description, solution description, and consequences (results and trade-offs of use).
- Implementation issues focus on aspects outside programming, including reuse of existing components, configuration management (tracking versions), and host-target development (development on one system, execution on another).
- Open source development publishes source code, allowing volunteers to participate.
- Open source code is rooted in the Free Software Foundation (www.fsf.org), advocating that source code should be accessible and modifiable.
- Linux is a well-known example of an open-source operating system.
- Other important open-source products include Java, the Apache web server, and the MySQL database management system.
- Some product companies use open-source development for cost-effectiveness, speed, and community building.
- A fundamental principle of open-source development is providing freely available source code, though with potential legal restrictions (open source licenses).
- Developers may require systems built from components to also be open source, and others may allow usage without restrictions.
- Software design and implementation are inter-leaved activities.
- Object-oriented design details system architecture.
- Design uses models to identify objects and describe interactions.
- Consider reuse, employing existing software assets.
- Open source development makes source code publicly available.
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Description
Explore the essentials of software design and implementation in this quiz based on Chapter 7 of Software Engineering. Understand how design relates to customer requirements, the use of COTS systems, and the complexities of structured object-oriented design. Test your knowledge of these critical elements in software development.
