UML教材：0公立大学注册系统文档.doc

Steps in Object-Oriented Systems Analysis:1.Identify the business events and make an event table (Chapter 3)2.Identify the use cases and produce a use case diagram for the system (Chapter 4)3.Write a use case narrative describing the systems response to each business event (Chapter 4)4.Draw a system sequence diagram for each use case scenario (Chapter 4)5.Produce a domain model showing the concepts, attributes, and associations in the problem domain of the system (Chapter 5)6.Write a contract for each system operation (Chapter 5)1.Identify the business events and make an event table (Chapter 3)A.List of business events:(i)Department submits class schedule external(ii)Time to produce class schedule temporal(iii)Student registers for classes external(iv)Time to produce class roster temporal B.Event Table:Event Table for the University Registration SystemEvent NumberEvent DescriptionSystem InputActor Providing InputSystem OutputActor Receiving Output1.Department submitsclass scheduleDepartment Class ScheduleDepartment2.Time to produce class schedule.UniversityClassScheduleStudentDepartmentProfessor3.Student registers for classes.Registration RequestStudentStudent Class ListStudent4.Time to produce class roster.ClassRosterProfessor2. Identify the use cases and produce a use case diagram for the system (Chapter 4)A. List of use cases: (i)Submit Department Class Schedule (ii)Produce University Class Schedule(iii)Register for Classes(iv)Produce Class Roster B.List of Actors:(i)Student initiating and participating (ii)Department initiating and participating(iii)Professor participatingC.Use Case Diagram:3. Write a use case narrative describing the systems response to each business event (Chapter 4)Use case:Submit Department Class ScheduleActors:DepartmentPurpose:Record a department class schedule.Overview:The Department submits a schedule of the classes it will offer for the next term. Details of each section (department code, course number, section number, maximum number of seats, meeting time, meeting place, and instructor identifier) are recorded in the system.Type: EssentialPreconditions:Courses and instructors are known to the system.Postconditions:Department class schedule was saved in the system.Special Requirements:Department must get a system response within 8 seconds when each section is entered.Flow of EventsActor ActionSystem Response1. This use case begins when a Department submits its schedule for a term.2. The Department provides thedepartment code, course number, section number, maximum number of seats, meeting time, meeting place and instructor identifier for each section in the schedule.3. Records the section schedule information.4. On completion of entry of the schedule, the Department indicatesthat the schedule is complete.Alternative Flow of EventsLine 3: Invalid department code and course number entered. Indicate error. Return to Step 2.Invalid meeting place entered. Indicate error. Return to Step 2.Invalid meeting time entered. Indicate error. Return to Step 2.Invalid instructor identifier entered. Indicate error. Return to Step 2.Use case:Register for ClassesActors:StudentPurpose:Register a student for classes and record the students schedule.Overview:A Student requests the sections of class desired for a term. The system adds the Student to each section if there is space available. On completion, the system provides the Student with a list of the classes in which he or she is enrolled.Type: EssentialPreconditions:Class schedule must exist.Student is known by the system.Postconditions:Student was enrolled in the section.Special Requirements:Student must get a system response within 10 seconds.Flow of EventsActor ActionSystem Response1. This use case begins when a Student desires to register for classes.2. The Student provides the Students identifier and a list of the department code, course number, and section number for each section desired.3. Adds the student to the section if there are seats available.4. On completion of entry of the section requests, the Student indicates that the request is complete.5. Produces a student class list for the Student.6. The Student receives the studentclass list.Alternative Flow of EventsLine 3: Invalid department code and course number entered. In