The following graph shows an incomplete EER diagram for school using electronic

Question

The following graph shows an incomplete EER diagram for school using electronic media. Develop a relational schema based on this EER. Include arrows connecting entities.

ROOM MEDIA Mtype ID Media Type Media Type Desc Building ID Room No Room Capacity Room Type Provides TIMESLOT TS ID Day of Week Start Time End Time Prefers Room Type: Trained INSTRUCTOR Emp ID Emp Name Emp Rank Emp Office Phone CLASSROOM Board Type LAB SCHEDULE Sched ID Contains Teaches COMPUTER Ctype ID Computer lype Type Description Disk Capacity Processor Speed SECTION Section ID s Prerequisite EnrLimit Sem Year COURSE Course ID Course Desc Course Credits Offers

Explanation / Answer

Relational Schema -- Tables

MEDIA(ID,Type,TypeDesc,BuildingID,ProvideRoomNumber)

ROOM(BuildingID,Number,Capacity,Type)

LAB(BuildingID,RoomNumber)

CLASSROOM(BuildingID,RoomNumber,BoardType)

INSTRUCTOR(ID,Name,Rank,OfficePhone,PreferTSID,TrainedMediaTypeID,TeachesSectionID)

TIMESLOT(ID,DayOfWeek,StartTime,EndTime)

SECTION(ID,EnrLimit,Sem,Year,OffersCourseID)

COURSE(ID,Desc,Credits,PreRequisteCourseID)

COMPUTER(CtypeID,Type,Description,DiskCapacity,ProcessorSpeed,ContainLabBuildingID,ContainLabRoomNumber)

SCHEDULE(ID,BuildingID,SectionID,TSID,RoomNumber)

underlined are Primary keys and italicised are foreign keys.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.