软体处理程序与需求分析需求工程處理程序

軟體處理程序與需求分析 需求工程處理程序,2,Outline,IntroductionAnalysis modelObject ModelDynamic ModelAnalysis activities Identifying entity objectsIdentifying boundary objectsIdentifying control objectsMapping use cases to sequence diagramModeling interactions among objects with class diagram,3,Software life cycle,Software life cycle,Development cycle,Design,Implementation,Testing,Maintenance,RequirementsEngineering,RequirementsElicitation,System design,Object design,Analysis,Use Cases,Problem statement,Analysis Model,4,Requirements engineering,Analysis,Problem statement,Requirements elicitation,Nonfunctional requirements,Dynamic model,Object model,Function model (Use case),Analysis Model,Specification,Requirements,5,Analysis model,6,Object model,The object model consists of:Entity objectsRepresenting the persistent information tracked by the system.(和系統有關的資料實體)Boundary objectsRepresenting the system interface with the actors.(表示系統和使用者的介面)Control objectsControl objects are responsible for coordinating boundary and entity objects. (entity object 和boundary object 溝通的object)Modeling interactions among objects with class diagrams. (class diagram 來表示object間的相互作用),7,Dynamic model,Sequence diagrams represent the interactions among a set of objects from object model during a single use case.(表示物件的互動關係(有時間順序的) )可以幫助我們確認use case,8,Analysis,Analysis activities,Use Cases,Dynamic model,Identifying entity objects,Identifying boundaryobjects,Mapping use casesto sequence diagram,Modeling interactionsamong objects withclass diagram,Sequence diagrams,Analysis Model,Identifying controlobjects,Object model,Class diagrams,9,Use case (input),10,Heuristics for identifying entity objects,Terms that developers or users need to clarify in order to understand the use case.(清楚了解及use case)Recurring nouns in the use case.(找出名詞)Real-world entities that the system needs to track.(現實中的實體)Real-world activities that the system needs to track.(現實中的活動/行為)Data sources or sinks.(資料)Recurring Adjective in the use case , it is Attribute of object(屬性),11,Identifying Entity Object (found out the class name),12,Identifying Entity Object (found out the attribute),13,Heuristics for identifying boundary objects,Identity user interface controls that the user needs to initiate the use case. (user怎樣去開始use case)Identity forms the user needs to enter data into the system. (使用者要給系統的資料)Identity notices and message the system uses to respond to the user. (user 怎樣和系統溝通),14,Heuristics for identifying control objects,Identity one control object per use case.(從use case 去找出一個control object)Identity one control object per actor in the use case.(從actor 去找出一個control object),15,Heuristics for drawing sequence diagrams,The first column should correspond to the actor who initiated the use case.(第一行是actor)The second column should be a boundary object (that the actor used to initiate the use case).(第二行是boundary object)The third column should be the control object that manages the rest of the use case.(第三行是control object)Control objects are created by boundary objects initiating use cases. (control object 是被boundary所建立)Boundary objects are accessed by control objects. (boundary object 是存取control object)Entity objects are accessed by control and boundary objects. (entity object 是被control object 和boundary object存取),16,Sequence diagram(1),AAForm,BBControl,CCEntity,DDEntity,actor,boundary object,control object,Entity objects,17,Sequence diagram(2),老師,建立作業(),new,建立作業Form,建立作業Control,作業,輸入(名稱,要求, 截止日期),檢查(.),UML sequence diagram for AnnounceTournament, tournament creation workflow,老師要建立作業.老師輸入作業的名稱(50字元), 作業的