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1. Give an example of a data constraint.
2. Give an example of a business rule that would need to be documented in a database development project.
3. Define the term entity and give an example other than those used in this book.
4. Explain the difference between an entity class and an entity instance.
Qt = 2.5 - 0.3 x Pt + 12 x Mt Where Qt represents the quantity of widgets sold per period t, Pt represents the price of widgets during period t, and Mt represents average household income of customers during period t.
Consider an exchange economy with two goods, 1 and 2, and two consumers, A and B. The consumers are initially endowed with a total of unit of each good, i.e. w1 = w1A + w1B = 1 and w2 = w1B + w2B = 1. Their preferences are represented by UA(x1, x2..
Kim deposits her annual bonus into a saving account that pays 8% interest compounded annually. The size of her bonus increases by $2,000 each year, and the initial bonus amount is $5,000.
An individual wishes to deposit an amount of money now and $100 every six months so that at the end of five years $1,500 will have been accumulated. With interest at 4% per year, compounded semiannually, how much should be deposited now
The intensive development effort needed to expedite the introduction can be very expensive. Revenues and costs associated with the new product
Would you expect patients and doctors to find ways around the maximum price?
If Wachovia bank receives a $10,000 deposit, and the required reserve ratio is 0.10 (= 10%), how much can the bank loan out? Assume that Wachovia keeps zero excess reserves and only keeps the required minimum reserves.
(Phillips Curves) Describe the different policy trade-offs implied by the short-run Phillips curve and the long-run Phillips curve. What forces shift the long-run Phillips curve?
A French company merges with an American company; stockholders in the U.S. company exchange their stock for shares in the French firm.
In the diagram for this exercise, use aggregate demand and short-run aggregate supply curves to show an economy at a short-run equilibrium with an expansionary gap, when potential output is $10 trillion. Then illustrate how the gap would close in ..
Let p* be the equilibrium price and y* theequilibrium quantity, so that p* = A-By*. Now suppose thedemand in the market shifts, so that the new demand curve is p =A'- B'y*. Hence, if the firm does not change its quantity
A private golf club has two types of members. Serious golfers each have a demand curve Q = 350 - P, where Q represents the number of rounds played per year and P is price per round. Causal golfers have the demand curve Q = 100 - 10P.
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