REQUIREMENTS CAPTURE 1 ASU Course Registration Domain Model

REQUIREMENTS CAPTURE 2 ASU — COURSE REGISTRATION PROBLEM STATEMENT At the beginning of each semester, students may request a course catalog containing a list of course offerings needed for the semester. Information about each course, such as instructor, department, and prerequisites are included to help students make informed decisions. The new system will allow students to select four course offerings for the coming semester. In addition, each student will indicate two alternative choices in case a course offering becomes filled or is canceled. No course offering will have more than forty students or fewer than ten students. A course offering with fewer than ten students will be canceled. Once the registration process is completed for a student, the registration system sends information to the billing system so the student can be billed for the semester. Professors must be able to access the online system to indicate which courses they will be teaching, and to see which students signed up for their course offerings. For each semester, there is a period of time that students can change their schedule. Students must be able to access the system during this time to add or drop courses.

REQUIREMENTS CAPTURE 3 ASU — POSSIBLE CLASSES At the beginning of each semester, students may request a course catalog containing a list of course offerings needed for the semester. Information about each course, such as instructor, department, and prerequisites are included to help students make informed decisions. The new system will allow students to select four course offerings for the coming semester. In addition, each student will indicate two alternative choices in case a course offering becomes filled or is canceled. No course offering will have more than ten students or fewer than three students. A course offering with fewer than three students will be canceled. Once the registration process is completed for a student, the registration system sends information to the billing system so the student can be billed for the semester. Professors must be able to access the online system to indicate which courses they will be teaching, and to see which students signed up for their course offerings. For each semester, there is a period of time that students can change their schedule. Students must be able to access the system during this time to add or drop courses.

REQUIREMENTS CAPTURE 4 ASU: POSSIIBLE CLASSES At the beginning of each semester, students may request a course catalogue containing a list of course offerings needed for the semester. classes: Semester, Student, CourseCatalogue, CourseOffering Information about each course, such as instructor, department, and prerequisites are included to help students make informed decisions. classes: Course (Information), Instructor, Department, Prerequisite, Informed Decision The new system will allow students to select four course offerings for the coming semester. classes: System In addition, each student will indicate two alternative choices in case a course offering becomes filled or is canceled. classes: AlternativeChoice

REQUIREMENTS CAPTURE 5 ASU: POSSIIBLE CLASSES No course offering will have more than forty students or fewer than ten students. classes: no new classes A course offering with fewer than ten students will be canceled. classes: no new classes Once the registration process is completed for a student, the registration system sends information to the billing system so the student can be billed for the semester. classes: RegistrationProcess, Information, BillingSystem Professors must be able to access the online system to indicate which courses they will be teaching, and to see which students signed up for their course offerings. classes: Professor

REQUIREMENTS CAPTURE 6 ASU: POSSIIBLE CLASSES For each semester, there is a period of time that students can change their schedule. classes: PeriodOfTime, Schedule Students must be able to access the system during this time to add or drop courses. classes: no new classes

REQUIREMENTS CAPTURE 7 ASU — KEEPIING THE RIIGHT CLASSES Semester  attribute (of course offering) Student  O.K. Course catalog  irrelevant (physical system generated entity) Course offering  O.K. Course (information)  O.K. Instructor  redundant (same as professor) Department  O.K. Prerequisite  role (of course) Informed decision  vague (mental process of students) System  implementation construct Alternative choice  redundant (same as course offerings) Registration process  operation (activity of using the system) Information  vague (need to specify more clearly) Billing system  irrelevant (external system) Professor  O.K. Period of time  vague (related to processing constraints) schedule  redundant (same as course offerings)

REQUIREMENTS CAPTURE 8 ASU — POSSIBLE ASSOCIATIONS At the beginning of each semester, students may request a course catalog containing a list of course offerings needed for the semester. Information about each course, such as instructor, department, and prerequisites are included to help students make informed decisions. The new system will allow students to select four course offerings for the coming semester. In addition, each student will indicate two alternative choices in case a course offering becomes filled or is canceled. No course offering will have more than ten students or fewer than three students. A course offering with fewer than three students will be canceled. Once the registration process is completed for a student, the registration system sends information to the billing system so the student can be billed for the semester. Professors must be able to access the online system to indicate which courses they will be teaching, and to see which students signed up for their course offerings. For each semester, there is a period of time that students can change their schedule. Students must be able to access the system during this time to add or drop courses.

REQUIREMENTS CAPTURE 9 ASU — POSSIBLE ASSOCIATIONS At the beginning of each semester, students may request a course catalogue containing a list of course offerings needed for the semester. associations: Student Requests CourseCatalogue CourseCatalogue Contains CourseOffering Semester Needs CourseOffering Information about each course, such as instructor, department, and prerequisites are included to help students make informed decisions. associations: CourseCatalogue Includes Course(Information) CourseCatalogue Helps Student Student Makes InformedDecision The new system will allow students to select four course offerings for the coming semester. associations: System Allows Student Student Selects CourseOffering

REQUIREMENTS CAPTURE 10 ASU — POSSIBLE ASSOCIATIONS In addition, each student will indicate two alternative choices in case a course offering becomes filled or is canceled. associations: Student Indicates AlternativeChoice ? Fills CourseOffering ? Cancels CourseOffering No course offering will have more than forty students or fewer than ten students. associations: CourseOffering Has Student A course offering with fewer than ten students will be canceled. associations: no new associations

REQUIREMENTS CAPTURE 11 ASU — POSSIBLE ASSOCIATIONS Once the registration process is completed for a student, the registration system sends information to the billing system so the student can be billed for the semester. associations: Student Completes RegistrationProcess System Sends Information To BillingSystem BillingSystem Bills Student Professors must be able to access the online system to indicate which courses they will be teaching, and to see which students signed up for their course offerings. associations: Professor Accesses System Professor Indicates Course Professor Teaches Course Professor Sees Student Student SignsUpFor CourseOffering

REQUIREMENTS CAPTURE 12 ASU — POSSIBLE ASSOCIATIONS For each semester, there is a period of time that students can change their schedule. associations: Student Changes Schedule Students must be able to access the system during this time to add or drop courses. associations: Student Accesses System Student Adds Course Student Drops Course

REQUIREMENTS CAPTURE 13 ASU — POSSIBLE ASSOCIATIONS student — requests — course catalog  class eliminated course catalog — contains — course offering  class eliminated semester — needs — course offering  class  eliminated course catalog — includes — course information  class  eliminated course catalog — helps — student  class  eliminated student — makes — informed decision  class  eliminated student — selects — course offering  operation student — indicates — alternative choice  operation ? — fills — course offering  operation ? — cancels — course offering  operation course offering — has — student  O.K. student — completes — registration process  class  eliminated system — sends — information — to — billing system  class  eliminated billing system — bills — student  class  eliminated professor — accesses — system  class  eliminated professor — indicates — course  operation professor — teaches — course  O.K. professor — sees — student  operation student — signs up for — course offering  operation student — changes — schedule  operation student — accesses — system  class  eliminated student — adds — course  operation student — drops — course  operation

REQUIREMENTS CAPTURE 14 ASU: DOMAIIN MODEL Classes Associations Student Department CourseOffering Has Student Course Professor Professor Teaches Course CourseOffering

REQUIREMENTS CAPTURE 15 ASU — DOMAIN MODEL prerequisite Student CourseOffering Teaches Appointed Offers ProfessorDepartment Course IsPrerequisiteFor EnrollsIn course Association information in red is inferred from domain knowledge.

REQUIREMENTS CAPTURE 16 ASU DOMAIN MODEL DETAIL— GENERALIZATION userID :String password : String userGroup : Integer surname : String otherNames : String address : String DOB : Date dateOfAdmission : Date levelOfStudy : String modeOfStudy : String yearOfStudy : Integer Student CourseOffering offeringId : String semester : String year : Integer Course code : String title : String description: String credits : Integer userID : String password : String userGroup : Integer surname : String otherNames : String address : String DOB : Date qualification : String Professor Department code: String title : String

REQUIREMENTS CAPTURE 17 ASU — DOMAIN MODEL DETAILS prerequisite Student CourseOffering Teaches AppointedIn Offers ProfessorDepartment Course IsPrerequisiteFor * * 1..* 1* * EnrolledIn grade : String 1..* Association information in red is inferred from domain knowledge. course

REQUIREMENTS CAPTURE 18 ASU Course Registration System Domain Model Detail Generalization

REQUIREMENTS CAPTURE 19 ASU DOMAIN MODEL DETAIL— GENERALIZATION userID :String password : String userGroup : Integer surname : String otherNames : String address : String DOB : Date dateOfAdmission : Date levelOfStudy : String modeOfStudy : String yearOfStudy : Integer Student CourseOffering offeringId : String semester : String year : Integer Course code : String title : String description: String credits : Integer userID : String password : String userGroup : Integer surname : String otherNames : String address : String DOB : Date qualification : String Professor Department code: String title : String

REQUIREMENTS CAPTURE 20 ASU DOMAIIN MODEL DETAIIL: GENERALIIZATIION

REQUIREMENTS CAPTURE 21 ASU DOMAIIN MODEL DETAIIL: GENERALIIZATIION

REQUIREMENTS CAPTURE 22 prerequisite ASU — COURSE REGISTRATION DOMAIN MODEL Student CourseOffering Teaches AppointedIn Offers ProfessorDepartment Course IsPrerequisiteFor * * 1..* 1* * 1 0..* EnrolledIn grade : String Person 1..*

REQUIREMENTS CAPTURE 23 ASU Course Registration System Domain Model Detail Constains

REQUIREMENTS CAPTURE 24 ASU DOMAIN MODEL DETAIL: CONSTRAINTS Is the multiplicity of the CourseOffering end of the EnrollsIn association realistic? –A student can enroll in at most four course offerings during their entire time at the university. Actually, the constraint should be: –A student can enroll in at most four course offerings in one semester. It is actually unknown the total number of course offerings in which a student will enroll. –The max-card should be *. To document the fact that enrollment in a semester should not be more than four course offerings an OCL constraint is needed.

REQUIREMENTS CAPTURE 25 ASU DOMAIN MODEL DETAIL: CONSTRAINTS