问题描述:
英语翻译
As previously stated,the design approach for SysML is to reuse a subset of UML and create extensions to support the specific concepts needed to satisfy the requirements in the UML for SE RFP.The SysML package structure shown in Figure 4.3 contains a set of packages that correspond to concept areas in SysML that have been extended.The reusable portion of UML that has not been extended is included by reference to the merged package (UML4SysML),and includes Interactions,State Machines,Use Cases,and Profiles.The SysML packages extend UML as follows:
• SysML::Model Elements refactors and extends the UML kernel portion of UML classes
• SysML::Blocks reuses structured classes from composite structures
• SysML::ConstraintBlocks extends Blocks to support the parametric modeling
• SysML::Ports and Flows extends UML::Ports,UML::InformationFlows and SysML::Blocks
• SysML::Activities extends UML activities
• SysML::Allocations extends UML dependencies
• SysML::Requirements extends UML classes and dependencies
As previously stated,the design approach for SysML is to reuse a subset of UML and create extensions to support the specific concepts needed to satisfy the requirements in the UML for SE RFP.The SysML package structure shown in Figure 4.3 contains a set of packages that correspond to concept areas in SysML that have been extended.The reusable portion of UML that has not been extended is included by reference to the merged package (UML4SysML),and includes Interactions,State Machines,Use Cases,and Profiles.The SysML packages extend UML as follows:
• SysML::Model Elements refactors and extends the UML kernel portion of UML classes
• SysML::Blocks reuses structured classes from composite structures
• SysML::ConstraintBlocks extends Blocks to support the parametric modeling
• SysML::Ports and Flows extends UML::Ports,UML::InformationFlows and SysML::Blocks
• SysML::Activities extends UML activities
• SysML::Allocations extends UML dependencies
• SysML::Requirements extends UML classes and dependencies
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