GENERIC ERD
Observe the GENERIC ER Diagram below:

This ER diagram will be used for the following questions citing Generic ER Diagram.
-If in the GENERIC ERD the Symbol 1 is | and the Symbol2 is ||,then the number of columns in the relational schema resulting from mapping the GENERIC ERD is 5.

Question

GENERIC ERD
Observe the GENERIC ER Diagram below:
 
This ER diagram will be used for the following questions citing Generic ER Diagram.
-If in the GENERIC ERD the Symbol 1 is >| and the Symbol2 is ||,then the number of columns in the relational schema resulting from mapping the GENERIC ERD is 5.

Quizplus · Accepted Answer

The Symbol1 >| indicates a one-to-many relationship, while the Symbol2 || indicates a one-to-one relationship. When mapping these relationships to a relational schema, the one-to-many relationship would result in a foreign key being added to the table with the many end, while the one-to-one relationship would result in the attribute being added directly to the table. This would result in a total of 5 columns in the relational schema.

GENERIC ERD Observe the GENERIC ER Diagram Below