We indicate roles in E-R diagrams by labeling the lines that connect ___________ to __________.
A. Diamond , diamond
B. Rectangle, diamond
C. Rectangle, rectangle
D. Diamond, rectangle
Answer:A
We indicate roles in E-R diagrams by labeling the lines that connect ___________ to __________.
A. Diamond , diamond B. Rectangle, diamond C. Rectangle, rectangle D. Diamond, rectangle
Explanation:Diamond represents a relationship set and rectangle represents a entity set.