Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.16RQ
In Figure 3-5b, why must the minimum cardinality next to SUPPLIES from PURCHASED PART be one yet the minimum cardinality next to SUPPLIES from SUPPLIER may be zero?
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2…
Use the XYZ Apartment Rental Company ERD shown on Figure 1 to answer questions 9 through 12:
According to the XYZ Apartment Rental Company ER diagram, which of the following is true?
Each building must have more than one builder
Each building must have multiple apartments
Each building must have at least 8 apartments
Each building must have more than 2 apartments
Answer: ____
Functional Dependency & Normalization
The table below lists customer/car hire data. Each customer may hire cars from various outlets throughout Glasgow. A car is registered at a particular outlet and can be hired out to a customer on a given date.
carReg
make
model
custNo
custName
hireDate
outletNo
outletLoc
M565 0GD
Tesla
Model S
C100
Smith, J
5/14/2018
101
San Francisco
M565 0GD
Tesla
Model S
C201
Helena, P
5/15/2016
101
San Francisco
N734 TPR
Nissan
Sunny
C100
Smith, J
5/16/2016
101
San Francisco
M134 BRP
Tesla
Model S
C313
Blatt, O
5/14/2018
102
Los Angeles
M134 BRP
Tesla
Model S
C100
Smith, J
5/20/2018
102
Los Angeles
M611 0PQ
Nissan
Sunny
C295
Alice, T
5/20/2018
102
Los Angeles
Fig: Table 1
Identify the functional dependencies represented by the data shown in the table above. State any assumptions you make about the data.
Using…
Chapter 3 Solutions
Modern Database Management
Ch. 3 - Define each of the following terms: supertype...Ch. 3 - Match the following terms and definitions:...Ch. 3 - Contrast the following terms: supertype; subtype...Ch. 3 - State two conditions that indicate when a database...Ch. 3 - Prob. 3.5RQCh. 3 - Give an example (other than those discussed in the...Ch. 3 - What is the attribute inheritance? Why is it...Ch. 3 - Give an example of each of the following: a...Ch. 3 - What types of business rules are normally captured...Ch. 3 - What is the purpose of a subtype discriminator?
Ch. 3 - Prob. 3.11RQCh. 3 - In what ways is starting a data modeling project...Ch. 3 - Prob. 3.13RQCh. 3 - Prob. 3.14RQCh. 3 - What do you purchase when you acquire a packaged...Ch. 3 - In Figure 3-5b, why must the minimum cardinality...Ch. 3 - When is a member of a supertype always a member of...Ch. 3 - Examine the hierarchy for the university EER...Ch. 3 - Add a subtype discriminator for each of the...Ch. 3 - For simplicity, subtype discriminators were left...Ch. 3 - Refer to the employee EER diagram in Figure 3-2....Ch. 3 - Refer to the EER diagram for patients in Figure...Ch. 3 - Figure 3-13 shows the development Of entity...Ch. 3 - Refer to Problem and Exercise 2-44 in Chapter 2...Ch. 3 - For a library, the entity type HOLDING has four...Ch. 3 - A bank has three types of accounts: checking,...Ch. 3 - Refer to your answer to Problem and Exercise 2-4...Ch. 3 - Refer to your answer to Problem and Exercise 3-24...Ch. 3 - Prob. 3.29PAECh. 3 - Draw an EER diagram for the following situation:...Ch. 3 - Develop an EER model for the following situation,...Ch. 3 - Prob. 3.32PAECh. 3 - Prob. 3.33PAECh. 3 - Prob. 3.34PAECh. 3 - Based on the EER diagram constructed for Problem...Ch. 3 - Prob. 3.36PAECh. 3 - Prob. 3.37PAECh. 3 - Add the following to Figure 3-16: An EMPLOYMENT...
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