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1. |
An ER model of a database consists of entity types A and B. These are connected by a relationship R which does not have its own attribute. Under which one of the following conditions, can the relational table for R be merged with that of A? |
A. | Relationship R is one-to-many and the participation of A in R is total. |
B. | Relationship is one-to-many and the participation of A in R is partial. |
C. | Relationship R is many-to-one and the participation of A in R is total. |
D. | Relationship R is many-to-one and the participation of A in R is partial. |
Answer» D. Relationship R is many-to-one and the participation of A in R is partial. | |