Imagine you are designing a database for an online retail store. The store sells various products and offers different types of promotions to customers. Here are some entities in the scenario:

1. Product (Entity A):

a. Attributes: ProductID (Primary Key), Name, Price, Description, StockQuantity

2. Electronics (Entity B):

a. Attributes: WarrantyPeriod, Brand, PowerConsumption

3. Clothing (Entity C):

a. Attributes: Size, Color, Material, Gender

4. Promotion (Entity D):

a. Attributes: PromotionID (Primary Key), Name, DiscountPercentage, StartDate, EndDate

5. Flash Sale (Entity E):

a. Attributes: FlashSaleID (Primary Key), LimitedStock, DiscountCode

Your task is to define superclass and subclass and alsocategorize these entities into superclasses and subclasses.