Question: How many optional columns will the relational schema mapped from the ABC Retailer ER diagram have?01234 ABC RETAILER (ERD) PromoID PromoName Date ProductID Description PROMOTION

How many optional columns will the relational schema mapped from the ABC Retailer ER diagram have?01234

How many optional columns will the relational
ABC RETAILER (ERD) PromoID PromoName Date ProductID Description PROMOTION AssociatedWith PRODUCT BelongsTo BrandID BRAND BrandName

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