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Questions and Answers
What is the primary goal of model-driven engineering?
What is the name of the subset of UML 2 that enables automated transformation of models to code?
What type of model identifies the principal concerns in a system?
What is associated with each class in a state model?
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What is the primary benefit of using MDA in an agile development process?
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What is the main difference between a platform-independent model and a platform-specific model?
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What is the purpose of a class model in Executable UML?
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What is the primary challenge of using MDA in agile development?
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What is the relationship between a domain model and a class model in Executable UML?
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What is the primary benefit of using Executable UML?
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Study Notes
System Modeling
- Data-driven modeling is used for systems that are primarily driven by data, showing the sequence of actions involved in processing input data and generating associated output.
- Event-driven modeling shows how a system responds to external and internal events, assuming a finite number of states and transitions between them.
- State machine models show system states as nodes and events as arcs between these nodes, used for modeling real-time systems.
State Machine Models
- State charts are used to represent state machine models and are an integral part of the UML.
- State machine models show system responses to stimuli, often used for modeling real-time systems.
Microwave Oven Example
- The microwave oven's operation can be modeled using a state machine, showing states such as Waiting, Half power, Full power, Set time, Disabled, Enabled, and Operation.
- Stimuli for the microwave oven include Half power, Full power, Timer, Number, Door open, Door closed, Start, and Cancel.
Model-Driven Engineering
- Model-driven engineering (MDE) is an approach to software development where models are the principal outputs of the development process.
- Platform-specific models (PSM) are transformations of the platform-independent model, with each PSM adding platform-specific detail.
MDA Transformations
- MDA transformations allow for the creation of multiple platform-specific models from a single platform-independent model.
Agile Methods and MDA
- Model-driven engineering (MDE) is intended to support an iterative approach to development and can be used within agile methods.
- However, the notion of extensive up-front modeling contradicts the fundamental ideas in the agile manifesto.
Executable UML
- Executable UML (xUML) is a subset of UML 2 that allows for completely automated transformation of models to code.
- Features of xUML include:
- Domain models that identify principal concerns in a system using UML class diagrams.
- Class models that define classes, attributes, and operations.
- State models that describe the life cycle of classes using state diagrams.
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Description
This quiz covers system modeling, specifically data-driven modeling and its applications in business systems.
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