

MCQOPTIONS
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1. |
A supertype/subtype hierarchy has which of the following features? |
A. | Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. |
B. | Attributes are assigned at the highest logical level. |
C. | Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. |
D. | Attributes are assigned at the lowest logical level. |
Answer» C. Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype. | |