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IBM SG24-7368-00 manual Mdsd and SysML

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Install Mdsd Create a context diagram Early detection of errors How to Service GPS navigation system features Using the Web material

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Figure 7-3 SysML Block Definition Diagram for the Rain Sensing Wiper system

Chapter 7. MDSD and SysML 151

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IBM SG24-7368-00 manual Mdsd and SysML

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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 addressesOverview 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 ServiceDefinitions System Use case Artifact Locality OperationActor Four basic principles Design pointsConnection Additional design points RUP Process Framework adopted by Mdsd Maintain all model levels as program assets Key conceptsEmploy the appropriate semantics and modeling languages Provide tool assets Analysis level Model levelsContext level Implementation level ViewpointsDesign 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 boundariesMdsd 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 eventsLevel of detail in use case flows Initiation of the use case Examples of use case initiation Using activity diagramsUnderstanding 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 operationsMore 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 realizationLogical 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 LocalitiesLocalities and systems engineering Connection semantics Locality semantics Localities and nodes Localities, services, and interfacesDescriptor 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 modelingCreating 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 boxCreate 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 diagramClick 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 levelSummary 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 systemsMdsd 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 systemsWhat 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 NameBrief Description Precondition One PreconditionsPostconditions Basic Flow of Events Flow of Event Formats Alternative Flows Na First Alternative Flow Area of Functionality S2 Second Subflow SubflowsAnother Area of Functionality S1 First Subflow Name of Extension Point Extension PointsSpecial 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 publicationsOther publications Help from IBM How to get IBM RedbooksOnline resources 199 Index Incose Stereotype 107 Logical Architecture RMC Information Page Model Driven Systems Development with Rational Products Page Page Model Driven Systems Development with Rational Products

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