Examlex
Write the schema to represent the entities below,including tables,the proper placement of the foreign key,and referential integrity constraint.
Mark-up
The surplus added onto the base cost of products intended to cover operational costs and generate profit.
Unit Cost
The financial outlay required for the production, storage, or acquisition of an individual product or service unit.
Mark-up
The difference between the cost of a good or service and its selling price, expressed as a percentage of the cost.
Selling Price
The price at which a product or service is sold to customers, determining the revenue generated from sales.
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