欢迎来到天天文库
浏览记录
ID:22743506
大小:97.80 KB
页数:10页
时间:2018-10-31
《外文翻译--uml2.0序列图组合碎片》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、中文2270字UML2.0SequenceDiagramCombinedfragmentsThediagram'spurposeThesequencediagramisusedprimarilytoshowtheinteractionsbetweenobjectsinthesequentialorderthatthoseinteractionsoccur.Muchliketheclassdiagram,developerstypicallythinksequencediagramsweremeantexclusivelyf
2、orthem.However,anorganization'sbusinessstaffcanfindsequencediagramsusefultocommunicatehowthebusinesscurrentlyworksbyshowinghowvariousbusinessobjectsinteract.Besidesdocumentinganorganization'scurrentaffairs,abusiness-levelsequencediagramcanbeusedasarequirementsdocu
3、menttocommunicaterequirementsforafuturesystemimplementation.Duringtherequirementsphaseofaproject,analystscantakeusecasestothenextlevelbyprovidingamoreformallevelofrefinement.Whenthatoccurs,usecasesareoftenrefinedintooneormoresequencediagrams.Anorganization'stechni
4、calstaffcanfindsequencediagramsusefulindocumentinghowafuturesystemshouldbehave.Duringthedesignphase,architectsanddeveloperscanusethediagramtoforceoutthesystem'sobjectinteractions,thusfleshingoutoverallsystemdesign.Oneoftheprimaryusesofsequencediagramsisinthetransi
5、tionfromrequirementsexpressedasusecasestothenextandmoreformallevelofrefinement.Usecasesareoftenrefinedintooneormoresequencediagrams.Inadditiontotheiruseindesigningnewsystems,sequencediagramscanbeusedtodocumenthowobjectsinanexisting(callit"legacy")systemcurrentlyin
6、teract.Thisdocumentationisveryusefulwhentransitioningasystemtoanotherpersonororganization.ThenotationSincethisisthefirstarticleinmyUMLdiagramseriesthatisbasedonUML2,weneedtofirstdiscussanadditiontothenotationinUML2diagrams,namelyanotationelementcalledaframe.Thefra
7、meelementisusedasabasisformanyotherdiagramelementsinUML2,butthefirstplacemostpeoplewillencounteraframeelementisasthegraphicalboundaryofadiagram.Aframeelementprovidesaconsistentplaceforadiagram'slabel,whileprovidingagraphicalboundaryforthediagram.Theframeelementiso
8、ptionalinUMLdiagrams;asyoucanseeinFigures1and2,thediagram'slabelisplacedinthetopleftcornerinwhatI'llcalltheframe's"namebox,"asortofdog-earedrectangle,an
此文档下载收益归作者所有