Podcast
Questions and Answers
Which of the following is NOT a characteristic of software engineering in an industrial setting?
Which of the following is NOT a characteristic of software engineering in an industrial setting?
What is a key difference between software and a physical product like a building?
What is a key difference between software and a physical product like a building?
Why is it difficult to ensure a defect-free software product?
Why is it difficult to ensure a defect-free software product?
What is a common challenge in software development due to interdependencies between components?
What is a common challenge in software development due to interdependencies between components?
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What is a key difference between the digital and analog modes of operation?
What is a key difference between the digital and analog modes of operation?
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What is a potential drawback of the ease of modification in software?
What is a potential drawback of the ease of modification in software?
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What is the main reason why a software product is often shelved after completion in a non-industrial setting?
What is the main reason why a software product is often shelved after completion in a non-industrial setting?
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Which of the following is NOT a characteristic of software development in a non-industrial setting?
Which of the following is NOT a characteristic of software development in a non-industrial setting?
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Which type of maintenance involves modifying software to handle changes in its environment, such as a new database system or web browser?
Which type of maintenance involves modifying software to handle changes in its environment, such as a new database system or web browser?
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What is the primary goal of refactoring?
What is the primary goal of refactoring?
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Which maintenance type is concerned with changes intended to address potential issues before they become problems?
Which maintenance type is concerned with changes intended to address potential issues before they become problems?
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Which of the following best describes the purpose of restructuring in software maintenance?
Which of the following best describes the purpose of restructuring in software maintenance?
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What is a typical negative consequence of long-term software maintenance?
What is a typical negative consequence of long-term software maintenance?
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What is the primary goal of software testing?
What is the primary goal of software testing?
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Which of the following is NOT typically considered a part of the coding phase?
Which of the following is NOT typically considered a part of the coding phase?
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What is the 'Pesticide Paradox' in software testing?
What is the 'Pesticide Paradox' in software testing?
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In software development, what distinguishes a 'failure' from an 'error'?
In software development, what distinguishes a 'failure' from an 'error'?
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What does the term 'go-live' refer to?
What does the term 'go-live' refer to?
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Which of the following best describes 'customization' during IT system deployment?
Which of the following best describes 'customization' during IT system deployment?
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What is the primary purpose of 'regression testing'?
What is the primary purpose of 'regression testing'?
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Priorities in software development, such as performance vs portability, are typically derived from:
Priorities in software development, such as performance vs portability, are typically derived from:
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Which aspect is NOT considered when determining user specifics for a system?
Which aspect is NOT considered when determining user specifics for a system?
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What is the primary purpose of business analysis in the context of an IT system?
What is the primary purpose of business analysis in the context of an IT system?
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What is considered a quality (non-functional) requirement of a system?
What is considered a quality (non-functional) requirement of a system?
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Which of the following is NOT included in a vision document's structure?
Which of the following is NOT included in a vision document's structure?
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Which of the following is a constraint imposed on the supplier of an IT system?
Which of the following is a constraint imposed on the supplier of an IT system?
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Which stakeholder group is primarily focused on the end-user experience of an IT system?
Which stakeholder group is primarily focused on the end-user experience of an IT system?
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Which of these is an example of a quality requirement focused on system reliability?
Which of these is an example of a quality requirement focused on system reliability?
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What is the primary focus of business analysis within software engineering?
What is the primary focus of business analysis within software engineering?
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What type of information is crucial to include in the description of the customer organization?
What type of information is crucial to include in the description of the customer organization?
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What does security in the context of system requirements encompass?
What does security in the context of system requirements encompass?
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Which is an essential factor when determining the training needs for users?
Which is an essential factor when determining the training needs for users?
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What is a common expectation from bank customers regarding the new IT system?
What is a common expectation from bank customers regarding the new IT system?
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Which of the following best describes requirements engineering?
Which of the following best describes requirements engineering?
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What does portability in system requirements refer to?
What does portability in system requirements refer to?
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What is a critical element in ensuring that software meets quality standards?
What is a critical element in ensuring that software meets quality standards?
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In the context of stakeholders, which group is focused on maintaining compliance with regulations?
In the context of stakeholders, which group is focused on maintaining compliance with regulations?
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Which statement about flexibility in a system is true?
Which statement about flexibility in a system is true?
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What does the logical architecture of a system describe?
What does the logical architecture of a system describe?
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What is typically NOT a factor to consider when identifying problems for an organization in need of an IT system?
What is typically NOT a factor to consider when identifying problems for an organization in need of an IT system?
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Which of the following is NOT an activity of requirements engineering?
Which of the following is NOT an activity of requirements engineering?
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Which aspect is essential to the organizational structure in understanding the customer organization?
Which aspect is essential to the organizational structure in understanding the customer organization?
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Which principle emphasizes that classes should have one reason to change?
Which principle emphasizes that classes should have one reason to change?
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What is the aim of system analysis within the context of software engineering?
What is the aim of system analysis within the context of software engineering?
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Which of the following constraints might be imposed on the design of a software product?
Which of the following constraints might be imposed on the design of a software product?
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What is the main purpose of identifying stakeholders in the development of an IT system?
What is the main purpose of identifying stakeholders in the development of an IT system?
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Which of the following best describes the primary goal of a vision document in IT system development?
Which of the following best describes the primary goal of a vision document in IT system development?
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A user who is highly concerned with preventing unauthorized access to financial data is most directly expressing a viewpoint related to which aspect of system context?
A user who is highly concerned with preventing unauthorized access to financial data is most directly expressing a viewpoint related to which aspect of system context?
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When assessing user specifics for a new system, what indicates the nature of training needed?
When assessing user specifics for a new system, what indicates the nature of training needed?
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According to the provided text, which of these is NOT a typical area of focus when describing a customer organization?
According to the provided text, which of these is NOT a typical area of focus when describing a customer organization?
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Which of the following best describes 'scope of cooperation' when considering external cooperating systems?
Which of the following best describes 'scope of cooperation' when considering external cooperating systems?
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Which of the following is the most accurate description of a 'stakeholder' in the context of IT system development?
Which of the following is the most accurate description of a 'stakeholder' in the context of IT system development?
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A system's requirement to handle a large number of concurrent users simultaneously is best categorized as a:
A system's requirement to handle a large number of concurrent users simultaneously is best categorized as a:
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What is the primary reason for a bank customer to expect an improvement in the transaction process after the introduction of an IT system?
What is the primary reason for a bank customer to expect an improvement in the transaction process after the introduction of an IT system?
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Which of the following represents a system's reliability requirement?
Which of the following represents a system's reliability requirement?
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What is the primary purpose of describing a system's context in the vision document?
What is the primary purpose of describing a system's context in the vision document?
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Which of the following is NOT a type of stakeholder, according to the text?
Which of the following is NOT a type of stakeholder, according to the text?
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What does the security requirement for a system primarily address?
What does the security requirement for a system primarily address?
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What is the key purpose of a 'business analysis' in the context of IT system development?
What is the key purpose of a 'business analysis' in the context of IT system development?
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If a system is expected to operate effectively on mobile devices, different operating systems, and browsers, this requirement relates to:
If a system is expected to operate effectively on mobile devices, different operating systems, and browsers, this requirement relates to:
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A requirement that the system should be easy to expand by adding new features is best described by what quality?
A requirement that the system should be easy to expand by adding new features is best described by what quality?
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Which type of software maintenance involves modifying the system to function correctly after a newly discovered bug is found?
Which type of software maintenance involves modifying the system to function correctly after a newly discovered bug is found?
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What distinguishes refactoring from restructuring in software maintenance?
What distinguishes refactoring from restructuring in software maintenance?
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Which activity is primarily concerned with improving the understandability and modifiability of code without altering its external behavior?
Which activity is primarily concerned with improving the understandability and modifiability of code without altering its external behavior?
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What is the potential long-term negative consequence of performing software maintenance?
What is the potential long-term negative consequence of performing software maintenance?
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Which of the following best describes the goal of 'preventive maintenance'?
Which of the following best describes the goal of 'preventive maintenance'?
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What is a key difference between software development in an academic setting compared to industrial practice?
What is a key difference between software development in an academic setting compared to industrial practice?
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Which characteristic of software makes it different from a physical product?
Which characteristic of software makes it different from a physical product?
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What is a primary challenge software developers face due to it's 'digital not analog' nature?
What is a primary challenge software developers face due to it's 'digital not analog' nature?
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According to the content, what is a major reason software development is complex, setting it apart from building construction?
According to the content, what is a major reason software development is complex, setting it apart from building construction?
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What potential negative consequence is associated with the ease of modifying software?
What potential negative consequence is associated with the ease of modifying software?
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Why is it hard for software developers to guarantee a defect-free product?
Why is it hard for software developers to guarantee a defect-free product?
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What is a key reason why software products are often shelved once completed in a non-industrial setting?
What is a key reason why software products are often shelved once completed in a non-industrial setting?
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What characteristic of software development could lead to maintenance problems over the time?
What characteristic of software development could lead to maintenance problems over the time?
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Which of the following best describes the concept of 'high cohesion'?
Which of the following best describes the concept of 'high cohesion'?
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In the context of software defects, what distinguishes a 'failure'?
In the context of software defects, what distinguishes a 'failure'?
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Which activity is primarily aimed at tailoring a generic software product to a specific customer's needs?
Which activity is primarily aimed at tailoring a generic software product to a specific customer's needs?
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What does 'low coupling' primarily indicate in software design?
What does 'low coupling' primarily indicate in software design?
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What is the purpose of the 'regression tests'?
What is the purpose of the 'regression tests'?
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Which of the following best describes an 'error' in the context of defects?
Which of the following best describes an 'error' in the context of defects?
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In the deployment process, what does 'data migration' primarily involve?
In the deployment process, what does 'data migration' primarily involve?
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What is the primary focus of 'unit testing' during the coding phase?
What is the primary focus of 'unit testing' during the coding phase?
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Which of the following best describes the primary goal of system analysis?
Which of the following best describes the primary goal of system analysis?
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What is the main difference between system design and class design?
What is the main difference between system design and class design?
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Which of the following best exemplifies a constraint 'with respect to the product'?
Which of the following best exemplifies a constraint 'with respect to the product'?
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What is the purpose of defining both logical and physical architecture in system design?
What is the purpose of defining both logical and physical architecture in system design?
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What is the primary focus of 'requirements elicitation' in requirements engineering?
What is the primary focus of 'requirements elicitation' in requirements engineering?
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Which of the following is an example of a functional requirement?
Which of the following is an example of a functional requirement?
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What characterizes a quality requirement, as mentioned in the text?
What characterizes a quality requirement, as mentioned in the text?
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What is the main difference between business analysis (BA) and system analysis (SA) according to the text?
What is the main difference between business analysis (BA) and system analysis (SA) according to the text?
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Flashcards
Engineering
Engineering
The process of using knowledge and principles to design, build, and analyze objects.
Immaterial Software Product
Immaterial Software Product
Software is a product that exists only in the digital world. It's not physical, so you can't touch it. To see it, you need to have at least part of it implemented.
Software Focus on Design, Not Production
Software Focus on Design, Not Production
The creation of multiple copies of software is easy and doesn't take much effort. Every software product is unique and different.
Software Doesn't Wear Out
Software Doesn't Wear Out
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Large Software Complexity
Large Software Complexity
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Software Structural Limitations
Software Structural Limitations
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Software Interdependencies
Software Interdependencies
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Software Digital Mode
Software Digital Mode
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Business Analysis
Business Analysis
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Vision Document
Vision Document
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Stakeholders
Stakeholders
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Customer Organization Description
Customer Organization Description
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Stakeholder Viewpoint example
Stakeholder Viewpoint example
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Functional Requirements
Functional Requirements
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Quality Requirements
Quality Requirements
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Constraints
Constraints
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System Functionality
System Functionality
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System Quality Requirements
System Quality Requirements
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System Constraints
System Constraints
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Performance Requirements
Performance Requirements
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Reliability Requirement
Reliability Requirement
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Availability Requirement
Availability Requirement
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Security Requirement
Security Requirement
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Safety Requirement
Safety Requirement
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Corrective Maintenance
Corrective Maintenance
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Perfective Maintenance
Perfective Maintenance
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Adaptive Maintenance
Adaptive Maintenance
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Preventive Maintenance
Preventive Maintenance
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Refactoring
Refactoring
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System Design
System Design
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Class Design
Class Design
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Logical Architecture
Logical Architecture
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Physical Architecture
Physical Architecture
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Communication Interfaces
Communication Interfaces
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Design Patterns
Design Patterns
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Good Practices
Good Practices
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Design Metrics
Design Metrics
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High Cohesion
High Cohesion
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Low Coupling
Low Coupling
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Defect
Defect
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Failure
Failure
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Error
Error
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Deployment
Deployment
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Maintenance
Maintenance
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Customization
Customization
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What makes software an immaterial product?
What makes software an immaterial product?
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Why is software design more important than production?
Why is software design more important than production?
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Does software wear out?
Does software wear out?
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Why is software exceptionally complex?
Why is software exceptionally complex?
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What is the impact of software's lack of structural limitations?
What is the impact of software's lack of structural limitations?
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What are the consequences of interdependencies in software?
What are the consequences of interdependencies in software?
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How does software respond to input changes?
How does software respond to input changes?
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What are the potential downsides of software's flexibility?
What are the potential downsides of software's flexibility?
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Stakeholder Viewpoint
Stakeholder Viewpoint
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System's Context
System's Context
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Requirements Engineering
Requirements Engineering
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System Design (Architectural Design)
System Design (Architectural Design)
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Class Design (Detailed Design)
Class Design (Detailed Design)
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Users and their specifics
Users and their specifics
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External cooperating systems
External cooperating systems
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Defect (Bug)
Defect (Bug)
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Study Notes
Software Engineering
- Engineering is the process of using knowledge and principles to design, build, and analyze objects. It is practically oriented.
- Software engineering involves analyzing and designing software, considering factors like usability, maintainability, portability, testability, and scalability.
- Software development includes various aspects, such as design patterns, architecture styles, team processes, estimation methods, requirements analysis, quality assurance, and more.
- Computer science concepts, like computability, formal specification, correctness proofs, network analysis, and others are relevant to software engineering.
- Related fields such as queueing theory, algorithms, programming languages (syntax/semantics), cryptography , automatic programming, machine learning, compiler design, and more are utilized in software engineering.
IT Experience During Study
- Students often have very limited or no real-world industrial experience.
- Software projects during study are usually small-scale and for academic purposes.
- The focus might be more on acquiring technology or answering academic questions than on providing value to real customers.
- Completed projects might not always transition into tangible, deployed products.
Industrial IT Practice
- Focuses mainly on professional and profitable software development.
- Software products range in size, from small (under 10 programmers) to large (over 1000 programmers).
- Development teams are typically large with many team members and specialists.
- Customers for products in industrial practice have specific needs and application requirements.
- Software is often maintained and updated for several years or decades.
- Industrial products often have substantial focus on business applications.
Software Specifics
- Software is immaterial, requiring implementation to be perceived.
- Projects often focus more on design than on simply copying.
- Software's complexity often surpasses that of physical objects, presenting challenges in fault detection and removal.
- Software doesn't wear out from usage but can still have faults due to design or environmental incompatibility; for example, software might have faults related to software or hardware interfaces.
Software Errors
- Specifications (39%): The most common location for software errors.
- Hardware Interface (11%): Errors also occur regarding the hardware interface.
- Logic Implementation (3%): Logical errors in the software are a relatively small percentage of all defects.
- Logic Description (5%): The logic design can lead to errors.
- Software Interface (10%): Faults related to the software's interface.
- Error Checking (15%): Errors can arise during checking steps.
- Module Design (15%): Faults or errors linked to module design.
- Documentation (2%): Documentation errors are relatively infrequent.
Cost of Error Correction
- Errors detected and corrected during the development process cost much less than errors found in deployed software.
- The cost increases exponentially once the software is deployed.
Value for Customers
- Customer needs and requirements must be explicitly gathered from the end user and translated to technical requirements.
- Software products must be well tailored to the customers' unique operational requirements.
- Software development must consider the practical necessities and expectations of customers.
Project Success and Failure
- Important factors for project success include user involvement, executive team support, clear and concise requirements, realistic timelines, and capable staff.
Business Analysis and System Analysis
- The analysis aims to provide a thorough understanding of the business problem and processes involved.
- It clarifies scope and requirements for the IT system.
- A vision document outlines the intended scope and requirements of the IT system.
- It focuses on the description of the customer organization, its stakeholders.
- It should outline context (users, cooperation), functional, quality, and performance needs, and constraints (e.g., budget, resources) .
System's Context
- Information about who will use the system, where it will be used (environment), any specific user skills in using particular systems, any training required, and documentation are needed for a complete system context.
System Requirements
- These cover functionality (what the system does) and quality attributes (e.g., performance, usability, reliability).
- Essential for understanding and accurately defining the software system.
- Must be specific, clear, measurable, attainable, relevant, and time-bound (SMART).
Expressing Requirements
- Functional requirements outline system capabilities for users.
- Quality attributes (e.g., performance, reliability, security) are expressed with measurable and verifiable criteria.
- Constraints may include deadlines, use of specific technologies, or other limitations.
Project Success Factors
- Factors such as user involvement, management support, clear requirements, realistic timelines, capable staff members, and effective communication are essential for successful project completion.
Software Development Areas and Models
- Areas like Project Management, Quality Assurance, and Development / Maintenance are crucial parts of software engineering.
- Models, such as the Waterfall Model, Iterative Models, V-model, Incremental model, and Prototyping, are widely used in software development.
Class Design
- Class design defines the internal organization of software modules, including modules and their constituent parts.
- It considers dependencies amongst modules and their constituents, data structures, and operations.
- Design patterns provide reusable solutions to common design problems.
Software Testing
- Testing is a vital process for detecting bugs and ensuring quality.
- Bugs in software can lead to unexpected behavior, errors, or faults.
- Testing aims to confirm adherence to requirements, specifications, and quality attributes.
- It is challenging to test every aspect of a complex program.
Deployment
- Deployment involves delivering the software system to users.
- Tasks include planning, installation, training users, data migration, go-live support, and system configuration and customization.
Maintenance
- Maintenance encompasses fixing defects, improving performance, adding features, and adapting to changing requirements and environments.
- The cost and effort of maintenance can be substantial, requiring significant resources over the software's useful life.
Requirements Management
- Requirements Management involves managing all aspects of requirements throughout the system lifecycle.
- It ensures consistency and completeness of requirements.
- Activities include gathering, analyzing, documenting, validating, and managing all changes in requirements.
Requirements Engineering
- Gathering requirements involves understanding user needs to design the system accordingly. Methods for eliciting needs include interviews, workshops, questionnaires, observation, and feedback. Use cases and other techniques are also relevant.
- Techniques ensure specific details are considered during requirements gathering.
- Techniques (such as use case analysis) are relevant to the analysis of the software system's requirements.
Software Analysis Techniques
- Employing appropriate techniques during requirement analysis is crucial to ensure all necessary details are conveyed.
- Validation methods for ensuring requirement accuracy are included.
Design Patterns
- Design patterns are reusable solutions to commonly occurring design problems, enabling consistency and reusability in code implementation.
- Categories such as creational, structural, and behavioral patterns are significant.
- Adherence to good design principles and commonly-used patterns is recommended to maintain maintainability and quality.
Optimization Measures
- Metrics for analyzing software quality, like cohesion and coupling, aid in assessing software structure.
Agile Methodologies
- Agile approaches (including Scrum) are common for software development.
- Agile is characterized by iterative development, adaptability, and continuous feedback.
Modelling
- Modelling involves creating simplified representations of processes and systems.
- Models facilitate understanding and communication within development teams.
- Various models are used depending on the scope and level of detail desired (e.g., instance-level and model-level models).
- Different types of models are relevant for different purposes and levels of abstraction.
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Description
Test your understanding of key software engineering principles and challenges faced in both industrial and non-industrial settings. This quiz covers characteristics of software products, maintenance types, and the unique attributes of software compared to physical products.