DBI202Xuất hiện trong 3 đề thi
In an ERD, which of the following best describes a one-to-many (1:M) relationship?
Các lựa chọn
AEach instance of Entity A is related to exactly one instance of Entity B
BEach instance of Entity A is related to many instances of Entity B
CEach instance of both entities is related to exactly one other instance
DEntities are not related at all