Modern Database Management
13th Edition
ISBN: 9780134773650
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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Students have asked these similar questions
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
Want in detail
Instructions: Create a dimensional model for a particular business process involving
gym membership. A customer can sign up for a membership of say one, three, six or
twelve months. I want to make it easy to query to identify current members, members
who expired in the last month, members who renewed in the last month, those who are
pending expiry etc.
If I have a basic model with a fact table representing a gym membership say
start_date_key
end_date_key
membership_attribute_key
customer_atrribute_key
fee
with associated dimension table for date, membership attributes such as length,
customer attributes and so forth. On a particular day, the active members are those with
a start date before the day and an end date after that day. Those who will expire next
month are those where the end date is in a particular date range.
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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