What is the difference between a demand curve and a demand schedule, and how do they each represent the relationship between price and quantity demanded in economics?

A demand curve is a graphical representation of the relationship between price and quantity demanded, showing how the quantity demanded changes as the price changes. A demand schedule, on the other hand, is a table that lists the quantity demanded at different prices. Both the demand curve and demand schedule illustrate the law of demand, which states that as the price of a good or service decreases, the quantity demanded increases, and vice versa.