Question: ? A B C RETALLER ( ERO ) We the ER Diagram for the ABC Retailer: ? 4 B C RETALLER ( ERD ) Which
RETALLER ERO
We the ER Diagram for the ABC Retailer:
RETALLER ERD
Which of the following is true according to the ABC Retailer ER diagram?
Some brands have no products
Every product is associated with a promotion
Some products belong to no brands
All of the above
None of the above
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