Which of the following steps is necessary to create a 1-to-l relationship between Entity A and Entity B?

Which of the following steps is necessary to create a 1-to-l relationship between Entity A and Entity B?

A. Set the data type of the identifier attribute of Entity B to Entity A Identifier.

B. Add a new Entity C, with two reference attributes of type Entity A Identifier and Entity B U Identifier.

C. Add a new reference attribute of type Entity B Identifier to Entity A.

D. Add a new Entity C, with the identifier attribute being a composition of types Entity A Identifier and Entity B Identifier.

View Answer

Answer: A