Assume the following ``real-world'' environment concerning a small supermarket, the Yappy Valley Culinary Boutique (YVCB). YVCB is organized into...

Assume the following ``real-world'' environment concerning a small supermarket, the Yappy Valley Culinary Boutique (YVCB). YVCB is organized into departments, each of which has some employees. Items are sold by departments, and are supplied by suppliers. Each supplier gives its own unique codes to the items it supplies. Also, each supplier has exactly one contact person who is an employee. Consider the relation schemas:Depts(dID, dName, budget)d stands for department.