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Mdsd Create a context diagram
Early detection of errors
How to
Service
GPS navigation system features
Using the Web material
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Chapter 6. Tool support for MDSD
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Contents
Model Driven Systems Development with Rational Products
Page
Model Driven Systems Development with Rational Products
First Edition February
Contents
Views Transformation methods Summary The core Mdsd process
Page
Summary of SysML basics
Index
Viii Model Driven Systems Development with Rational Products
Copyright License
RUP
Trademarks
Preface
Team that wrote this book
Thank you
Become a published author
Comments welcome
Introduction
Changed context for systems development
Challenges of systems development
Creative/dynamic and transactional complexity
Management of complexity
Benefits of modeling
Central problems Mdsd addresses
Overview of model-driven systems development
Introduction
Integration of form and function
Multiple views to address multiple concerns
Project management
Two analogies
Scalability Isomorphic composite structures and recursion
Benefits of model-driven systems development
Enhanced team communication
Reduction of risk
Early detection of errors
Explicit processes for reasoning about system issues
Integration as you go-better architecture
High cost of requirements errors
Well defined semantics
Traceability
Defining context
Core processes of model-driven systems development
Defining collaborations
Distributing responsibilities
Prerequisites/required foundational concepts/languages
UML
How the book is organized
Definitions, design points, and key concepts
Requirement
Service
Definitions
System
Use case
Artifact
Locality
Operation
Actor
Four basic principles
Design points
Connection
Additional design points
RUP Process Framework adopted by Mdsd
Maintain all model levels as program assets
Key concepts
Employ the appropriate semantics and modeling languages
Provide tool assets
Analysis level
Model levels
Context level
Implementation level
Viewpoints
Design level
Viewpoint Expresses Concern
Transformation methods
Views
System of systems decomposition
Levels of system decomposition
Operations analysis
Joint realization
Requirement derivation
Summary The core Mdsd process
Definitions, design points, and key concepts
Model Driven Systems Development with Rational Products
Black-box thinking Defining the system context
Context and description
Importance of understanding context
An important context Usage
System in context
GPS navigation system features
Usage-driven versus feature-driven system design
GPS navigation system usages
Mdsd Finding actors
Actors and boundaries
Mdsd Define the system context
Primary and secondary actors
Actors and value
Questions to discover actors
Actors and the system boundary
Sample context diagram
Mdsd Create a context diagram
Mdsd Finding I/O entities
Entities
Use cases
Retail system context diagram
Black-box thinking Defining the system context
What do you use your car for?
Mdsd Finding use cases
Black-box thinking Defining the system context
Writing a brief description
Actor involvement in use cases
Retail use case diagram
Mdsd Write use case flows of events
Use case flows of events
Level of detail in use case flows
Initiation of the use case
Examples of use case initiation
Using activity diagrams
Understanding collaboration from a black-box perspective
Mdsd Operation identification
Identifying operations
Incorrect sequence diagram
Requests The key to operations
Information in the Mdsd model
Specifying request signatures
Which messages are correct?
Message naming a quiz
Toward better requests
Unlocking car Cumbersome sequence
Identifying operations from the sequence diagram
Sequence diagram with arrowheads circled in red
Model Driven Systems Development with Rational Products
Mdsd Refactoring and consolidating enterprise operations
Refactoring operations
More about operations
Model Driven Systems Development with Rational Products
Summary
Model Driven Systems Development with Rational Products
White-box thinking Understanding collaboration
Mdsd Operation realization
Operation realization
Logical viewpoint
Mdsd Creating element context diagrams
Operation analysis
Black-box sequence diagram
Enterprise operation Initiate New Sale
Operation specification example
White-box thinking Understanding collaboration
Flowdown to further levels
White-box sequence diagram for operation Compute Online Sale
Mdsd Create use case models at levels below the enterprise
Model Driven Systems Development with Rational Products
Understanding distribution of responsibility
Mdsd Developing a locality model
Localities
Localities and systems engineering
Connection semantics
Locality semantics
Localities and nodes
Localities, services, and interfaces
Descriptor diagrams For the design level
Design trades
System locality view Example
Sequence diagrams with localities
Joint realization
Sequence diagram with localities
Joint realization diagram
DRF1 PRF1
Joint realization tables
LRF4 Raster Image Processing
Logical view Distribution view
Association of logical entities, localities, and interfaces
Model Driven Systems Development with Rational Products
Tool support for Mdsd
Organizing an Mdsd model
Model structure
Project
Level 0 model organization
Level 1 model organization
Level 2 and beyond model organization
Mdsd UML Profile
Mdsd Profile applied to the model
Stereotypes
Mdsd UML Profile stereotypes
Two levels of a sample Mdsd model
Levels of decomposition
Model with first level expanded
Actors
Logical entities
10shows an example context diagram
11 Level 1 model structure
Use cases and operations
13 Level 1 use case structure
Distribution entities
15 Locality diagram
Automation
16 Joint realization diagram
Preparing the environment
UML diagrams for systems modeling
Creating Mdsd artifacts
17 Workspace Launcher
Preparing the Workbench
Select File → New → Project
Create a new UML Modeling Project
19 Create UML Project
Name the new project Weather Tracking System
Select Stereotype Style → Shape Image
Select Window → Preferences
22 Preferences Shape Image
Installing the Mdsd plug-in
Click New Local Site Figure
Name the new site Mdsd Figure
Select Mdsd as the only site, and click Finish Figure
Select Standard template
Modeling the system as a black box
Create the system model
29 Create the Systems Model
Type Weather Tracking System and press Enter
Create the context diagram
Expand 00 Enterprise Level → Actors → $Building Blocks
Select Weather Tracking System in the diagram
Click Apply Stereotypes
33 Copy $actor.name and find/replace
35 Drag an actor into the context diagram
Expand 00 Enterprise Level → Use Cases → $Building Blocks
37 Drag use case into the use case diagram
38 Create an association in the use case diagram
39 Use case diagram
41shows the context diagram
Repeat these steps to create the associations listed inTable
Expand 00 Enterprise Level → Actors → LocalForecaster
Create black-box sequence diagram
45 Drag actor into sequence diagram
Select Create Message Figure
Label the operation provide local weather data Figure
Identify systems that will collaborate at L1
Modeling the system at level
Summary
52 Rename the use case
Realize a system operation
Expand 01 System Level → Logical Elements
Open the WB Sequence Diagram
Name the operation provide local weather data Figure
Repeat these steps to create the messages listed in Table
58 White-box sequence diagram with messages
Creating a localities diagram
Create associations
From Stereotype
Click Apply Stereotypes Select connection
Summary
Model Driven Systems Development with Rational Products
143
Mdsd and SysML
Mdsd RUP SE as contributor to SysML
Introduction
Comparison of SysML1.0 with UML2.0
Basics of SysML
Requirements modeling
Areas of focus of SysML
Mdsd and SysML
Model Driven Systems Development with Rational Products
Mdsd and SysML
Block semantics
Block definition diagram
Mdsd and SysML
Example of requirement allocation
Ports
Internal block diagram
Model Driven Systems Development with Rational Products
Mdsd and SysML
Constraints
SysML Block Definition Diagram to type ports
Mdsd and SysML
Parametrics
Parametric diagram for the windshield
Behavior modeling
Understanding context
Using blocks to stand for systems
Mdsd with SysML
Blocks as basic structural units
11 Context diagram with blocks and associations
Requirements and understanding context
12 Context diagram with blocks and ports
Understanding collaborations
15 SysML interaction diagram
Understanding distribution of responsibilities
16 SysML joint allocation diagram
Parametrics
Model Driven Systems Development with Rational Products
18 Requirements diagram for radar
R4 varies by P x a x T
20 Simplified Radar Power and Range parametric diagram
Summary of SysML basics
Mdsd and SysML
Model Driven Systems Development with Rational Products
175
Systems engineering
Why we build systems
What is systems engineering?
Main concern Subordinate concern
Systems concerns
How does Mdsd fit in?
Conclusion
Model Driven Systems Development with Rational Products
181
Appendix A. Mdsd use case specification template
Model Driven Systems Development with Rational Products
Document Approval
Revision History
Table of Contents
Actor Catalog
Use-Case Specification Use-Case Name
Brief Description
Precondition One
Preconditions
Postconditions
Basic Flow of Events
Flow of Event Formats
Alternative Flows
Na First Alternative Flow
Area of Functionality
S2 Second Subflow
Subflows
Another Area of Functionality
S1 First Subflow
Name of Extension Point
Extension Points
Special Requirements
Additional Information
Model Driven Systems Development with Rational Products
193
Locating the Web material
Using the Web material
195
Abbreviations and acronyms
Model Driven Systems Development with Rational Products
197
IBM Redbooks publications
Other publications
Help from IBM
How to get IBM Redbooks
Online resources
199
Index
Incose
Stereotype 107 Logical Architecture
RMC
Information
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