EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133777840
Author: AUER
Publisher: VST
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Expert Solution & Answer
Chapter 2, Problem 2.27RQ
Explanation of Solution
Difference between answers to questions 2.25 and 2.26:
Note: Refer the questions 2.25 and 2.26 in the textbook which represents functional dependency A-> (B, C) and (D, E) ->F respectively.
Difference between answers to 2.25 and 2.26:
| A->(B,C) | (D,E)->F |
| It is a one to many functional dependencies. | It is a many to one functional dependency. |
| Given a value for A, user can determine the value of both B and C respectively, represented as (B, C). | Given the value for both D and E simultaneously, represented as (D, E), user can determine the value of (F). |
| A is determinant of the composite (B, C)... |
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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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- Please solve and answer the questions correctly please. Thank you!!arrow_forwardConsidering the TM example of binary sum ( see attached)do the step-by-step of execution for the binary numbers 1101 and 11. Feel free to use the Formal Language Editor Tool to execute it; Write it down the current state of the tape (including the head position) and indicate the current state of the TM at each step.arrow_forwardI need help on inculding additonal code where I can can do the opposite code of MatLab, where the function of t that I enter becomes the result of F(t), in other words, turning the time-domain f(t) into the frequency-domain function F(s):arrow_forward
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