Question: 2. What is a composite entity, and when is it used? 3. What is a recursive relationship? Give an example. 4. Discuss the difference

BOOK ISBN AUTHOR AID BOOK_AUTHOR AID TITLE FIRST DATE_PUB LAST ISBN price CITY

2. What is a composite entity, and when is it used? 3. What is a recursive relationship? Give an example. 4. Discuss the difference between a composite key and a composite attribute. 5. What is a derived attribute? Give an example. 6. Discuss the difference between a composite key and a composite attribute. 7. A BOOK must have one or more AUTHORS. Each AUTHOR must write at least one BOOK. This M:N relationship is decomposed to form the bridge entity BOOK_AUTHOR. Fill the tables below with sample data and indicate the primary and foreign keys. BOOK ISBN AUTHOR AID BOOK_AUTHOR AID TITLE FIRST DATE PUB LAST ISBN price CITY

Step by Step Solution

★★★★★

3.34 Rating (151 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

2 A composite entity is an entity that is composed of multiple attributes where each attribute repre... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Consider the same simple setting used in the TRS setting. Bank A, a highly rated bank, has a funding cost of Libor (L) rate, while Bank B, a lower rated entity, has a funding cost of L + 40 basis...

List three specific parts of the Case Guide, Objectives and Strategy Section (See below) that you had the most difficulty understanding. Describe your current understanding of these parts. Provide...

MULTIPLE CHOICE QUESTIONS 1. Nulls, if used improperly, can create problems because they can represent ____. a. a default value b. a known, but missing, attribute value c. zero d. an unsortable value...

Consider the following reaction at 800. K: N2(g) + 3F2(g) 2NF3(g) An equilibrium mixture contains the following partial pressures: PN2 = 0.021 atm, PF2 = 0.063 atm, and PNF3 = 0.48 atm. Calculate Go...

Toledo Custom Manufacturing (TCM) makes machined steel parts to customer specification. They have a variety of machines that can hold tight tolerances. In this case they have just received an order...

Quality control holes. Engineers at a computer production plant tested two methods for accuracy in drilling holes into a PC board. They tested how fast they could set the drilling machine by running...

76. Consider a gambler who on each bet either wins 1 with probability 18/38 or loses 1 with probability 20/38. (These are the probabilities if the bet is that a roulette wheel will land on a...

Main Street Service Co. has achieved fast growth in the St. Louis area by selling service contracts on large appliances, such as washers, dryers, and refrigerators. For a fee, Main Street agrees to...

A company issued 10%, 5-year bonds with a par value of $600,000. The market rate when the bonds were issued was 8%. The company received $613,600 cash for the bonds. What is the semi-annual Bond...

Figure shows three reactors linked by pipes. As indicated, the rate of transfer of chemicals through each pipe is equal to a flows rate (Q, with units of cubic meters per second) multiplied by the...

Not long ago, Johnson Manufacturers Pty Ltd was wound up in insolvency on the application of one of its major unpaid suppliers. While the company's liquidator was examining the company's inadequate...

The weights of 5 squash (in pounds) are 10,17,17.5,18.5, and 19.5. The sample weights have a mean of = 16.5. The accepted population standard deviation for this type of squash is = 1.25. 1) What is...

2.2 The Ministry of Works and Transport approaches you and wants your professional advice regarding the Memorandum of Understanding on the Development and Management of the TransKalahari Corridor....

A member tells you that she was recently hospitalized. She received a bill from a collection agency, even though she did not receive a bill from the hospital. She is worried this will affect her...

Boeing's recent results highlighted the case for the stock but perhaps not in the way many investors might think. In truth, they were mixed. However, Boeing's management has conservatively guided...

Two dietary drinks are used to supply protein, carbohydrates, and vitamin C. The first drink provides 2 units of protein, 5 units of carbohydrates, and 7 units of vitamin C in each liter. The second...

2. If an equal likelihood of each of several discrete events exists, in a simulation we can generate a random integer to indicate the choice. For example, in a simulation of a pollen grain moving in...

Fill in each blank so that the resulting statement is true. 83 + 103 = ______ .

The following table gives the frequency distribution of the total miles driven during 2012 by 300 car owners. Miles Driven in 2012 (in thousands) Number of Car Owners 0 to less than 5............. 7...

A company employs a total of 16 workers. The management has asked these employees to select 2 workers who will negotiate a new contract with management. The employees have decided to select the 2...

Let x be a continuous random variable that has a normal distribution with = 48 and = 8. Assuming n/N Answered: 1 week ago

8.6 Describe the major theoretical perspectives toward understanding substance use disorders

T F You cannot become psychologically dependent on a drug without also becoming physically dependent on it. (p. 295)

T F Even moderate use of alcohol increases the risk of heart attacks. (p. 303)