Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Question
Model
Vin
Price
VEHICLE
CAR
TRUCK
SUV
Engine_size
Tonnage
No_seats
VEHICLE
Vin price Model
CAR
Vin engine_size
TRUCK
Vin Tonnage
SUV
Vin No Seats
CAR
TRUCK
SUV
Vin price Model engine_size Vin price Model Tonnage Vin price Model No Seats
VEHICLE
Vin price Model Vehicle Type engine_size Tonnage No Seats
VEHICLE
Vin price Model Is_Car engine_size Is_Truck Tonnage Is_SUV No_Seats
Consider this ER diagram and 4 possible options:
Using option B or C: Implement one by showing the create table(s) statement. If you select
B, write the trigger that ensures a VIN can only appear in one table. If you select C, write the
trigger that requires the data associated with a particular Vehicle Type is not null, and sets
the other data to null. Provide at least 3 sample data that demonstrates your trigger is
working as expected.
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Transcribed Image Text:Model Vin Price VEHICLE CAR TRUCK SUV Engine_size Tonnage No_seats VEHICLE Vin price Model CAR Vin engine_size TRUCK Vin Tonnage SUV Vin No Seats CAR TRUCK SUV Vin price Model engine_size Vin price Model Tonnage Vin price Model No Seats VEHICLE Vin price Model Vehicle Type engine_size Tonnage No Seats VEHICLE Vin price Model Is_Car engine_size Is_Truck Tonnage Is_SUV No_Seats Consider this ER diagram and 4 possible options: Using option B or C: Implement one by showing the create table(s) statement. If you select B, write the trigger that ensures a VIN can only appear in one table. If you select C, write the trigger that requires the data associated with a particular Vehicle Type is not null, and sets the other data to null. Provide at least 3 sample data that demonstrates your trigger is working as expected.
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