Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 5, Problem 5.25RQ
Program Plan Intro
One-to-many relationship (1:N):
One-to-many relationship is one of the types of binary relationship that refer to the relationship between two entities which means one parent field or record can be associated with one or more child field or record.
Many-to-many relationship (N:M):
Many-to-many relationship is one of the types of binary relationship that refer to the relationship between two entities which means many fields or records in a table are associated with many fields or records in another table.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
7. For the following recurrence relation:
T(n)
express T(n) using the e-notation.
if n = 1
2T(n-1)+c, if n > 1,
Show how to represent a 1:N recursive relationship in your answer to question 5.29. How does this differ from the representation of 1:N nonrecursive relationships?
Cumulative ACK. What is meant by a cumulative acknowledgment, ACK(n)?
Chapter 5 Solutions
Database Concepts (7th Edition)
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
Knowledge Booster
Similar questions
- Answer the following questions given the following recurrence relations: 1. T; (n) = 2 x T, (4) + n 2. T, (п) — 4 x Т, + n? 3. T3 (п) —D 8 х T; (" +n 4. TА(п) %3D 8 х Т, (3) + 1 And T, (n) = T2(n) = T3 (n) = T4(n) = 0(1) A. Order the respective time complexities from FASTEST to SLOWEST B. Assuming the same input n, arrange the recurrence relations based on the expected recursion depth from DEEPEST to SHALLOWEST. C. Assuming that each node in their respective recursion trees consume the same amount of constant space, which recurrence relation/s has/have the worst worst-case space complexity (0(M(n)))? Would this/these also require the most amount of space or program stack memory?arrow_forwardWhich statement best describes k-means cluster analysis? It is the process of estimating the value of a continuous outcome variable. It is the process of organizing observations into distinct groups based on a measure of similarity or dissimilarity. It is the process of reducing the number of variables to consider in data-mining. It is the process of agglomerating observations into a series of nested groups based on a measure of similarity or dissimilarity.arrow_forwardGiven the code below: def bar(x, y): if y > 0: if (y % 2): return bar(x, y >> 1) + bar(x, y >> 1) + x return bar(x, y >> 1) + bar(x, y >> 1) else: return e Find: 1. The recurrence relation when x.y>0, (The answer should be of the form T(xy) = T) + O(), fill the blanks) 2. worst-case time complexityarrow_forward
- Does a higher value of k lead to a more complex model, or a less complex model?arrow_forwardThe efficiencies of the three approaches above can be compared for different relationships between m and n. If m > log n, which approach is the most efficient in the average case? Why? If m < log n, which approach is the most efficient in the average case? Why?arrow_forwardEach person in a group of n persons (n >= 4) has independent information known only to themselves. Whenever a person calls another person in the group, they exchange all the information they know at the time of calling. Design a sequence of calls (specifying the persons involved in each call) that they have to make in order to ensure that everyone knows all the information. How many calls are there in your scheme?arrow_forward
- Suppose relations R(A,B) and S(B,C,D) are as follows: 3 5 A 1 R B 6 2 4 4 6 8 9 C 5 7 c. The full outer join has 3 NULLs. d. The left outer join has 4 NULLS. S A Compute the full outer join on B, the left outer join on B, and the right outer join on B. In each case, R is the left operand and S is the right operand. Then, answer the following questions for each of the three resu How many rows are there in the result? 2 How many NULL's appear in the result? Finally, find the correct statement in the list below. O a. The right outer join has 2 rows. Ob. The right outer join has no NULLS. D 1 2 3arrow_forwardGiven employee data from some company, the semantics of each row are: employee ID, employee name, age, and salary. 142519864,Susan Martin,39,56990 242518965,James Smith,68,27099 141582651,Mary Johnson,44,94011 011564812,John Williams,35,74098 254099823,Patricia Jones,28,42783 356187925,Robert Brown,28,35431 489456522,Linda Davis,26,25971 287321212,Michael Miller,62,131072 Write a Python function that returns a new employee list with salary updated: if an employee is younger than 40, raise his or her salary by 5%; otherwise raise the salary by 10%. Refer to lecture notes or exercises and solutions from http://www.python-course.eu/python3_lambda.php for help, if needed.arrow_forwardExplain Intentionally Bias the Model to Over-Fit or Under-Fit with codearrow_forward
- Draw an ER model; An author writed a book . Every book has a title, ISBN, year, and price. each book may be authored by one or more author and each author may write one , or more than one book. For authors the database keeps the name, address and URL of their homepage. Each book has a publisher. The database keeps the name, address , and phone number adn the URL of their wedbsite. Each publishers publishes one or more books and each book is published by exactly one publisher. The warehouse stocks several books. Each warehouse has a code, address and phone number. The database records the number of copies stocked at various warehouse.arrow_forwardwrite this in relation algebra: SELECT s.sname FROM student s, reservation r WHERE s.sid!=r.sidarrow_forwardSuppose relations R(A,B) and S(B,C,D) are as followsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education