Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 2, Problem 2.10RQ
Define the term unique key and give an example.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Suppose that the MinGap method below is added to the Treap class on Blackboard.
public int MinGap ( )
Returns the absolute difference between the two closest numbers in the treap. For example, if the
numbers are {2, 5, 7, 11, 12, 15, 20} then MinGap would returns 1, the absolute difference between 11
and 12.
Requirements
1. Describe in a separate Design Document what additional data is needed and how that data is used to
support an time complexity of O(1) for the MinGap method. Show as well that the methods Add and
Remove can efficiently maintain this data as items are added and removed. (6 marks)
2. Re-implement the methods Add and Remove of the Treap class to maintain the augmented data in
expected O(log n) time. (6 marks)
3. Implement the MinGap method. (4 marks)
4. Test your new method thoroughly. Include your test cases and results in a Test Document. (4 marks)
Suppose that the two Rank methods below are added to the Skip List class on Blackboard.
public int Rank (T item)
Returns the rank of the given item.
public T Rank(int i)
Returns the item with the given rank i.
Requirements
1. Describe in a separate Design Document what additional data is needed and how that data is used to
support an expected time complexity of O(log n) for each of the Rank methods. Show as well that the
methods Insert and Remove can efficiently maintain this data as items are inserted and removed. (7
marks)
2. Re-implement the methods Insert and Remove of the Skip List class to maintain the augmented data in
expected O(log n) time. Using the Contains method, ensure that added items are distinct. (6 marks)
3. Implement the two Rank methods. (8 marks)
4. Test your new methods thoroughly. Include your test cases and results in a Test Document. (4 marks)
Suppose that the two Rank methods below are added to the Skip List class on Blackboard.
public int Rank (T item)
Returns the rank of the given item.
public T Rank(int i)
Returns the item with the given rank i.
Requirements
1. Describe in a separate Design Document what additional data is needed and how that data is used to
support an expected time complexity of O(log n) for each of the Rank methods. Show as well that the
methods Insert and Remove can efficiently maintain this data as items are inserted and removed. (7
marks)
2. Re-implement the methods Insert and Remove of the Skip List class to maintain the augmented data in
expected O(log n) time. Using the Contains method, ensure that added items are distinct. (6 marks)
3. Implement the two Rank methods. (8 marks)
4. Test your new methods thoroughly. Include your test cases and results in a Test Document. (4 marks)
Chapter 2 Solutions
Database Concepts (8th Edition)
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 - Define the terms candidate key and primary key....Ch. 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 - Apply the normalization process to the Veterinary...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What class do you use to work with random access files?
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
What is an object?
Starting Out With Visual Basic (8th Edition)
Determine the magnitude of the resultant force. Prob. F2-2
INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
In Exercises 53 through 56, determine the output produced by the lines of code where Courier New is the font se...
Introduction To Programming Using Visual Basic (11th Edition)
Look at the following function header for a member function: void Circle::getRadius() What is the name of the f...
Starting Out with C++ from Control Structures to Objects (9th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- automata theoryarrow_forwardI need help in construct a matlab code to find the voltage, the currents, and the watts based on that circuit.arrow_forwardObjective Implement Bottom-Up Iterative MergeSort and analyze its efficiency compared to recursive MergeSort. Unlike the recursive approach, which involves multiple function calls and stack overhead, the bottom-up version sorts iteratively by merging small subarrays first, reducing recursion depth and improving performance. Task 1. Implement Bottom-Up Iterative MergeSort о Start with single-element subarrays and iteratively merge them into larger sorted sections. Use a loop-based merging process instead of recursion. ○ Implement an efficient in-place merging strategy if possible. 2. Performance Analysis Compare execution time with recursive MergeSort on random, nearly sorted, and reversed datasets. ○ Measure and plot time complexity vs. input size. O Submission Explain why the iterative version reduces function call overhead and when it performs better. • Code implementation with comments. • A short report (1-2 pages) comparing performance. • Graph of execution time vs. input size for…arrow_forward
- Given a shared data set, we allow multiple readers to read at the same time, and only one single writer can access the shared data at the same time. In the lecture slides, a solution is given. However, the problem is that the write cannot write forever, if there are always at least one reader. How to ensure that the writer can eventually write? Propose your solution by using semaphores and implemented in Python from threading import Thread, Semaphore from time import sleep from sys import stdout class Reader(Thread): def__init__(self, name): self.n=name; Thread.__init__(self) defrun(self): globalnr, nw, dr, dw whileTrue: # ⟨await nw == 0 then nr += 1⟩ e.acquire() ifnw>0: #if nw > 0 or dw > 0 : dr+=1; e.release(); r.acquire() nr+=1 ifdr>0: dr-=1; r.release() else: e.release() # read data stdout.write(self.n+' reading\n') sleep(1) # ⟨nr -= 1⟩ e.acquire() nr-=1 ifnr==0anddw>0: dw-=1 ; w.release() else: e.release() class Writer(Thread): def__init__(self, name):…arrow_forwardAnnée scolaire: 2024/2025 Collège SMARA Devoir à domicile 1 semestre 2 Prof: NILAJ PHYSIQUE CHIMIE Nom et Prénom: Niveau: 3APIC Exercice 1: Durée: 1 heure 1) Donner la définition des termes suivantes? Le Mouvement : La vitesse moyenne: 2) Répondre par « Vrai » ou «> Un objet peut être en mouvement et au repos Si la vitesse est constante, le mouvement sera uniforme. 3) Compléter les phrases par les termes qui conviennent : Pour déterminer le mouvement ou le repos d'un objet, vous devez choisir un autre objet appelé le d'un point d'un corps mobile est l'ensemble des positions qu'il occupe durant son mouvement. Il y a trois types de trajectoires: circulaire. La distance de freinage dépend de 4) Cocher la bonne réponse? > La relation entre la vitesse, la distance et le temps: d Vm = dxt > L'unité internationale de la vitesse moyenne est : m/s 5) On considère la figure suivante : Compléter le tableau par les mots suivants : En mouvement au repos A C Km/h et et l' m. s-1 15 A B C Sol…arrow_forward5. Here is a tree corresponding to T(64) for an unknown recurrence relation: 32 + lg 64 8+ lg 16 2+ lg 4 2+lg4 2+lg4 8+ lg 16 2+lg4 7 7 7 7 7 7 7 7 Fill in the details for the corresponding recurrence relation: T(n) = T(n/4)+ T(1)= Put scratch work below. Scratch work is not graded but may be used for regrade partial credit.arrow_forward
- Top screenshot is question, the rest are examples and explinations.arrow_forwardActivity Time (days) Predecessors Earliest Expected Completion Time (TE) Latest Expected Completion Time (TE) 1 4 2 5 1 3456782222 6 1 7 1 4 4 6 2,3 5 3 5 5,7 9 4 7 10 3 6,9 11 5 8,9,10 12 4 11 Slack Critical Path? Yes or Noarrow_forwardI would like to know about the following concepts: 1. defragmentation 2. disk management 3. hardware RAIDarrow_forward
- Node.js, Express, and Nunjucks Templates?arrow_forwardCIT244 Program Project 3 Assignment As with any assigned program, do not wait until the last minute to start. Start early in the week the program is due so you can ask questions if you get stuck Node.js and Express and Nunjucks Templates We have gotten to the good stuff. There is a program similar to this assignment given as the last example in the lecture notes for the week that discusses node static files. This program will take more time that previous assignments. There are several examples you should study first, particularly the pizza order example program available in the examples programs folder for the week discussing static files. You should study and run the pizza order program before trying this program. The pseudo-company is called Sun or Fun, which offers cheap flights from Louisville to either Miami or Vegas. Here's a video of how it should work. NOTE: You will hear or see references to Handlebars in this video. We used to use Handlebars, but it will be Nunjucks that we…arrow_forwardhow to write the expression for the outputarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr
Fundamentals of Information SystemsComputer ScienceISBN:9781337097536Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781285196145Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos CoronelPublisher:Cengage Learning
A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr
Fundamentals of Information Systems
Computer Science
ISBN:9781337097536
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Cengage Learning
How to Design DB Tables for any Application? (The Basics); Author: Studytonight;https://www.youtube.com/watch?v=XUdNVaSikqY;License: Standard YouTube License, CC-BY
Create a Table (Introduction to Oracle SQL); Author: Database Star;https://www.youtube.com/watch?v=BiV1IrzB1sY;License: Standard Youtube License