Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 11, Problem 3P
Using Table 11.4 as an example, create two alternative access plans. Use the following assumptions:
- a. There are 8,000 employees.
- b. There are 4,150 female employees.
- c. There are 370 employees in area code 615.
- d. There are 190 female employees in area code 615.
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Using Table 11.4 as an example, create two alternative access plans. Use the following assumptions:
a. There are 8,000 employees.
b. There are 4,150 female employees.
c. There are 370 employees in area code 615.
d. There are 190 female employees in area code 615.
Consider the schedule S1 = w1(A), r2(A), w1(B), w3(C), r2(C), r4(B), w2(D), w4(E), r5(D), w5(E) on five transactions T1, T2, . . . , T5. How many serial and how many non-serial schedules the above transactions T1, T2, . . . , T5 can have?
E8.4 Consider the following scenario involving Pineview Ford, an auto dealership.
Auto dealership Pineview Ford is organized as follows:
• Pineview Ford keeps track of Vehicle Identification number of every vehicle that is for sale, sold, serviced, or rented by the dealership.
• Vehicles are sold via a sale transaction. One transaction involves one sales person, one client, and one vehicle.
• Vehicles are serviced via a service transaction. One transaction involves one service person, one client, and one vehicle.
• In addition to selling and servicing vehicles, Pineview Ford occasionally rents vehicles. One rental transaction involves one rental agent, one client, and one vehicle.
Pineview Ford wants to create the analytical database (data warehouse) to analyze their revenue. The two available data sources, Source 1 and Source 2, are described below.
Source 1 Pineview Sales and Service Database
Source 2 Pineview Rental Log
The data warehouse has to enable an analysis of revenue by…
Chapter 11 Solutions
Database Systems: Design, Implementation, & Management
Ch. 11 - Prob. 1RQCh. 11 - What index should you create? Write the required...Ch. 11 - What is the focus of most performance-tuning...Ch. 11 - What are database statistics, and why are they...Ch. 11 - How are database statistics obtained?Ch. 11 - What database statistics measurements are typical...Ch. 11 - How is the processing of SQL DDL statements (such...Ch. 11 - In simple terms, the DBMS processes a query in...Ch. 11 - If indexes are so important, why not index every...Ch. 11 - What is the difference between a rule-based...
Ch. 11 - Prob. 11RQCh. 11 - What are some general guidelines for creating and...Ch. 11 - Prob. 13RQCh. 11 - Prob. 14RQCh. 11 - Prob. 15RQCh. 11 - SELECT SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE,...Ch. 11 - Problem 1 and 2 are based on the following query:...Ch. 11 - Using Table 11.4 as an example, create two...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Prob. 6PCh. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Problems 1721 are based on the following query:...Ch. 11 - SELECT SELECT P_CODE, P_DESCRIPT, P_PRICE,...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Prob. 27PCh. 11 - Problems 27 and 28 are based on the following...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...
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