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0. 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?
Relationship R is one-to-many and the participation of A in R is total
Relationship R is one-to-many and the participation of A in R is partial
Relationship R is many-to one and the participation of A in R is total
Relationship R is many-to one and the participation of A in R is partial
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