In a supertype-subtype structure,discriminator attributes ________.
A)are easily represented in a relational design
B)cannot be represented in a relational design
C)require application logic to determine which subtypes correspond to a specific supertype instance
D)A and C
E)B and C

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The Answer of In a supertype-subtype structure,discriminator attributes ________.
A)are easily represented in a relational design
B)cannot be represented in a relational design
C)require application logic to determine which subtypes correspond to a specific supertype instance
D)A and C
E)B and C

In a Supertype-Subtype Structure,discriminator Attributes ________