Podcast
Questions and Answers
What does the deployment structure primarily show?
What does the deployment structure primarily show?
Which aspect is NOT typically reasoned about using the deployment structure?
Which aspect is NOT typically reasoned about using the deployment structure?
What is the primary purpose of the implementation structure?
What is the primary purpose of the implementation structure?
How does the work assignment structure impact architecture?
How does the work assignment structure impact architecture?
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What kind of relations exist between different architectural structures?
What kind of relations exist between different architectural structures?
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Which of the following statements is true regarding a module in a decomposition structure?
Which of the following statements is true regarding a module in a decomposition structure?
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Architectural patterns allow for the composition of elements in order to:
Architectural patterns allow for the composition of elements in order to:
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Which structure is primarily concerned with the assignment of responsibilities to teams?
Which structure is primarily concerned with the assignment of responsibilities to teams?
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What are components in component-and-connector structures?
What are components in component-and-connector structures?
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Which of the following questions can component-and-connector views help answer?
Which of the following questions can component-and-connector views help answer?
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What do allocation structures primarily show?
What do allocation structures primarily show?
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Why are structures important in software architecture?
Why are structures important in software architecture?
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What relationship do allocation views help to clarify?
What relationship do allocation views help to clarify?
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Which of the following does NOT characterize a component-and-connector structure?
Which of the following does NOT characterize a component-and-connector structure?
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What aspect of a system’s properties can component-and-connector views analyze?
What aspect of a system’s properties can component-and-connector views analyze?
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Which question would NOT be relevant when considering allocation structures?
Which question would NOT be relevant when considering allocation structures?
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What is a primary characteristic of the decomposition structure?
What is a primary characteristic of the decomposition structure?
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How does the uses structure benefit system engineering?
How does the uses structure benefit system engineering?
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What role do layers play in a layered structure?
What role do layers play in a layered structure?
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What does an effective decomposition structure achieve in a system?
What does an effective decomposition structure achieve in a system?
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In a uses structure, what defines the relationship between modules?
In a uses structure, what defines the relationship between modules?
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What is another term for the primary units in a layer structure?
What is another term for the primary units in a layer structure?
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Which aspect of a system is highly influenced by its concurrency structure?
Which aspect of a system is highly influenced by its concurrency structure?
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What aspect does the deployment structure significantly contribute to?
What aspect does the deployment structure significantly contribute to?
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What is a characteristic of software architecture?
What is a characteristic of software architecture?
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Why is a small number of ways for components to interact recommended in architectural design?
Why is a small number of ways for components to interact recommended in architectural design?
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Which of the following describes component-and-connector structures?
Which of the following describes component-and-connector structures?
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What does modifiability in a software system imply?
What does modifiability in a software system imply?
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What is the benefit of having resource contention areas clearly specified in an architecture?
What is the benefit of having resource contention areas clearly specified in an architecture?
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Which structure illustrates the relationship between a system and its external environment?
Which structure illustrates the relationship between a system and its external environment?
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What is a key implication of stating that every system has a software architecture?
What is a key implication of stating that every system has a software architecture?
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What does the term 'view' refer to in software architecture?
What does the term 'view' refer to in software architecture?
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What characterizes the Layered architectural pattern?
What characterizes the Layered architectural pattern?
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Which pattern involves components and connectors that create, store, and access data?
Which pattern involves components and connectors that create, store, and access data?
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What is the primary role of connectors in a client-server pattern?
What is the primary role of connectors in a client-server pattern?
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What does the term 'multi-tier pattern' refer to in architectural design?
What does the term 'multi-tier pattern' refer to in architectural design?
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How is work allocated in the competence center pattern?
How is work allocated in the competence center pattern?
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What defines a 'good' architecture according to the discussed principles?
What defines a 'good' architecture according to the discussed principles?
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Which of the following statements is true regarding architectural patterns?
Which of the following statements is true regarding architectural patterns?
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What is a key feature of the Layered pattern in software architecture?
What is a key feature of the Layered pattern in software architecture?
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Study Notes
Component-and-Connector Structures
- Define the runtime behavior of systems using components (e.g., clients, servers) and connectors (e.g., call-return, pipes).
- Key questions addressed include:
- Major executing components and their interactions.
- Shared data stores and system replication.
- Data flow and parallel execution potential.
- Dynamic structure changes during execution.
- Important for evaluating runtime properties such as performance, security, and availability.
Allocation Structures
- Illustrate the relationship between software elements and their execution environments.
- Key queries include:
- Processor assignments for software elements.
- Storage locations during various stages (development, testing).
- Team assignments for software elements.
Importance of Structures
- Structures provide analytical insights into software architecture and its quality attributes:
- Module structure impacts system modifiability.
- Concurrency structure is related to deadlock and performance management.
- Deployment structure influences performance, availability, and security.
Useful Module Structures
-
Decomposition Structure:
- Modules are recursively decomposed into smaller units.
- Facilitates understanding and localization of changes.
-
Uses Structure:
- Modules are related by dependency; one module using another requires the latter's correct functionality.
- Supports incremental development and functionality extension.
-
Layer Structure:
- Composed of layers that act as virtual machines providing services through managed interfaces.
Useful Allocation Structures
-
Deployment Structure:
- Connects software elements to hardware and communication components.
- Utilized for performance, data integrity, and security assessments in distributed systems.
-
Implementation Structure:
- Shows how software elements are organized in development and configuration environments.
-
Work Assignment Structure:
- Defines team responsibilities for implementation and integration of modules.
Relating Structures
- One structure's elements can relate to another structure’s elements, often performing many-to-many mappings (e.g., a module in decomposition may manifest as multiple components).
Architectural Patterns
- Architectural elements can be composed into established patterns that solve specific problems:
- Common patterns include Shared-data and Client-server.
- Promote reusable strategies that delineate the types and interactions of software elements.
-
Common Patterns:
- Multi-tier Pattern: Distributes system components across subsets of hardware/software.
- Competence Center Pattern: Allocates work based on technical expertise.
- Platform Pattern: Focuses on developing reusable assets for software product lines.
Characteristics of "Good" Architecture
- There's no definitive measure of good or bad architecture; effectiveness is context-dependent.
- Modifiability is enhanced when data changes are localized to production or consumption sides.
Structural Rules of Thumb
- Expect variation between modules and components; they are not one-to-one.
- Ensure processes can easily shift assignments across processors, potentially at runtime.
- Limit interaction patterns among components to reduce complexity and enhance reliability.
- Clearly specify resource contention areas within architecture.
Summary of Software Architecture
- Comprises structures essential for reasoning about the system, including software elements and their relationships.
- Three structure categories:
- Module structures (code/data units).
- Component-and-connector structures (runtime behavior and interactions).
- Allocation structures (relations to external non-software elements).
- Structures are engineering leverage points; architectures vary in their suitability for particular purposes.
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Description
Explore the principles of component-and-connector structures in software architecture. This quiz will help you understand the runtime behavior of components and their interactions through connectors. Dive into various types of runtime elements and their roles in system structure.