A GUIDE TO SQL
9th Edition
ISBN: 9781305897397
Author: Pratt
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 2, Problem 11RQ
Explanation of Solution
Functional dependencies:
Functional dependency is a term in the relational
Explanation of Solution
Database:
The given database comprises of the following tables with the respective columns as shown below.
- DEPARTMENT – DEPARTMENT NUM, DEPARTMENT_NAME
- ADVISOR – ADVISOR_NUM, ADVISOR_LAST_NAME,ADVISOR_FIRST_NAME,DEPARTMENT_NUM
- COURSE – COURSE_CODE, DESCRIPTION
- STUDENT – STUDENT_NUM, STUDENT_LAST_NAME,STUDENT_FIRST_NAME, ADVISOR_NUM
Relations:
The term relation refers to the relationship between the data represented in row-column format...
Program Plan Intro
Entity Relationship Diagram (ERD):
Entity relationship diagram is basically a picture or snapshot about the business system. It means that the information stored and created is represented by this diagram.
- Entities may represent the physical object, event, or concept.
- An attribute is a property of an entity.
- Relationship denotes the link between the entities.
- If an independent child entity is present in a relationship then it is called a non-identifying relationship.
- If a dependent child entity is present in a relationship then it is called a non-identifying relationship.
Expert Solution & Answer
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Design a dynamic programming algorithm for the Longest Alternating Subsequence problem
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Input: A sequence of n integers
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The algorithm must take O(n²) time. You must also write and explain the recurrence.
Example 1:
Input: [3, 5, 4, 1, 3, 6, 5, 7, 3, 4]
Output: 8 ([3, 5, 4, 6, 5, 7, 3, 4])
Example 2:
Input: [4,7,2,5,8, 3, 8, 0, 4, 7, 8]
Output: 8 ([4, 7, 2, 5, 3, 8, 0,4])
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Design a dynamic programming algorithm for the Coin-change problem described below:
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Example 1:
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Output: 6 (since 24 = 10+ 10+1+1 +1 + 1)
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Output: 2 (since 86 = 46+35+5)
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(I want the largest k such that there are 1 ≤ i₁ < ... < ik ≤ m and 1 ≤ j₁ < ... < jk ≤ n such that
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Output: 6 ('ghnost' is the longest common subsequence to both strings)
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Chapter 2 Solutions
A GUIDE TO SQL
Ch. 2 - Prob. 1RQCh. 2 - What is an attribute?Ch. 2 - What is a relationship? What is a one-to-many...Ch. 2 - Prob. 4RQCh. 2 - What is a relation?Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - How do you qualify the name of a field, and when...Ch. 2 - Prob. 9RQCh. 2 - What is a primary key? What is the primary key for...
Ch. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Define second normal form. What types of problems...Ch. 2 - Define third normal form. What types of problems...Ch. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - List the changes you would need to make to your...Ch. 2 - Prob. 1TDCh. 2 - Prob. 2TDCh. 2 - Prob. 3TDCh. 2 - Prob. 4TDCh. 2 - Prob. 5TDCh. 2 - Prob. 1CATCh. 2 - Identify the functional dependencies in the...Ch. 2 - Prob. 3CATCh. 2 - Determine the functional dependencies that exist...Ch. 2 - Prob. 2SCGCh. 2 - Prob. 3SCG
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