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MULTIPLE CHOICE Directions: In the space provided, place the letter of the BEST selection for each of the following statements or questions. _ D 1
MULTIPLE CHOICE
Directions: In the space provided, place the letter of the BEST selection for each of the following statements or questions.
D Refer to the diagram below. Which activity is allowed?
a Having NULL values for Jersey c Having a NULL value for TeamId
b Having NULL values for Position d All are allowed
B Assuming that nulls are allowed in foreign keys, which of the following will onetomany relationship prevent?
a deleting a record from the N side without first deleting the corresponding entity from the side
b deleting a record from the side without first deleting the corresponding entities from the N side
c adding a record to the N side without first having a corresponding entity in the side
d adding a record to the side without first having a corresponding entity on the N side
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