DBI202Xuất hiện trong 2 đề thi
When converting an ER diagram to relational schema, how is a one-to-many relationship between entities implemented?
Các lựa chọn
ACreate two tables with separate keys
BMerge both entities into one. We accept the duplicated values in all columns of the “one” side.
CAdd the primary key of the "one" side as a foreign key in the "many" side
DCreate a view combining both tables