Modern Database Management
13th Edition
ISBN: 9780134792293
Author: Hoffer
Publisher: PEARSON
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Chapter 9, Problem 9.45PAE
Program Plan Intro
(a)
To design a multidimensional schema to represent data mart.
Program Plan Intro
(b)
To redesign answer in order to accommodate the history of changes so that it can be matched with precise customer characteristics.
Program Plan Intro
(c)
To redesign the data mart to accommodate product hierarchies.
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Query design by referring the following scenario.Scenariocompany has a huge database to handle their employees’ details.Most of the details regarding the employee activities and department details are stored in Employeestable and Departments table. Write the appropriate query to support the manager to complete thefollowing:
Query design by referring the following scenario.Scenariocompany has a huge database to handle their employees’ details.Most of the details regarding the employee activities and department details are stored in Employeestable and Departments table. Write the appropriate query to support the manager to complete thefollowing:
The set of 7 attributes is { desc, drought, price, sci, size, store, zones }
The attributes are for plants for sale at different stores
The dependencies are:
{sci, store, size} -> {price}
{sci} -> {desc, drought, zones}
"desc" is the description of the plant
"drought" is whether the plant can survive with less water
"price" is the price of the plant
"sci" is the scientific name of the plant
"store" is the name of a store that sells the plant
"zones" indicates which climate zones the plant will grow in
What is the key for the complete set of attributes?
a. price
O b. sci, store and size
c. desc, drought and zones
d. sci
Chapter 9 Solutions
Modern Database Management
Ch. 9 - Prob. 9.1RQCh. 9 - Prob. 9.2RQCh. 9 - Prob. 9.3RQCh. 9 - List the five major trends that necessitate data...Ch. 9 - Prob. 9.5RQCh. 9 - Prob. 9.6RQCh. 9 - Prob. 9.7RQCh. 9 - Prob. 9.8RQCh. 9 - Prob. 9.9RQCh. 9 - Prob. 9.10RQ
Ch. 9 - List four objectives of derived data.Ch. 9 - Prob. 9.12RQCh. 9 - Prob. 9.13RQCh. 9 - Explain the pros and cons of logical data marts.Ch. 9 - Prob. 9.15RQCh. 9 - What is a helper table, and why is it often used...Ch. 9 - Describe the characteristics of a surrogate key as...Ch. 9 - Prob. 9.18RQCh. 9 - What is the purpose of conformed dimensions for...Ch. 9 - Prob. 9.20RQCh. 9 - Prob. 9.21RQCh. 9 - Prob. 9.22RQCh. 9 - Prob. 9.23RQCh. 9 - Prob. 9.24RQCh. 9 - Prob. 9.25RQCh. 9 - Describe the current key trends in data...Ch. 9 - Discuss the benefits of offering data warehousing...Ch. 9 - Prob. 9.28RQCh. 9 - List six typical characteristics of reconciled...Ch. 9 - Prob. 9.30RQCh. 9 - Prob. 9.31RQCh. 9 - Prob. 9.32RQCh. 9 - Prob. 9.33RQCh. 9 - Describe some field-level and record-level data...Ch. 9 - Prob. 9.35PAECh. 9 - Prob. 9.36PAECh. 9 - Prob. 9.37PAECh. 9 - Prob. 9.38PAECh. 9 - You are to construct a star schema for Simplified...Ch. 9 - Simplified Automobile Insurance Company would like...Ch. 9 - Prob. 9.41PAECh. 9 - Prob. 9.42PAECh. 9 - Prob. 9.43PAECh. 9 - Prob. 9.45PAECh. 9 - Prob. 9.46PAECh. 9 - Prob. 9.47PAECh. 9 - Prob. 9.48PAECh. 9 - Prob. 9.49PAECh. 9 - Prob. 9.50PAECh. 9 - Prob. 9.51PAECh. 9 - Prob. 9.52PAECh. 9 - Prob. 9.53PAECh. 9 - Prob. 9.54PAE
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