EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133544886
Author: AUER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 2, Problem 2.17RQ
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The reason for which values of surrogate keys are normally hidden from users on forms, queries and reports:
Surrogate Key:
A surrogate key is basically a unique identifier used in databases for a modeled object or an object which is been added to table to uniquely identify a row.
- It is a unique, numeric identifier that is appended to a relation to be served as a primary key...
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Background information: Imagine you are a consultant for a fictional company, FutureTech Innovations, which specializes in advanced technology products. The company is interested in improving its decision-making processes by leveraging Business Analytics (BA) and Management Support Systems (MSS).
Talk about how Online Analytical Processing (OLAP) could be used to analyze data from multiple perspectives at FutureTech. What dimensions (e.g., time, product, region) would be important, and how would OLAP enhance decision-making?
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Design a synchronous Up/Down counter to produce the following sequence
(4
9
2,0,7,6,3,1,5) using T flip-flop. The counter should count
up when Up/Down =1, and down when Up/Down = 0.
An active-HIGH pulse (HIGH level when asse rted, LOW level when not) is required on an i nverter input.(a) Draw the appropriate logic symbol, using t he distinctive shape and the negation indicat or, for the inverter in this application.(b) Describe the output when a positive-goin g pulse is applied to the input of an inverter.
Chapter 2 Solutions
EBK DATABASE CONCEPTS
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Prob. 2.13RQCh. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Prob. 2.40E
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