Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 4, Problem 4.11RQ
Explanation of Solution
Identifier:
Identifier is an attribute which is used to uniquely identify a particular entity instances from an entity.
Note: An entity instance is an occurrence of a particular entity.
Composite identifier:
Composite identifier is combinations of two or more attributes in an entity that can be uniquely identify each instance in the entity...
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Use the created table as in Question 1, solve the problems as mentioned below. You will have to
import the respective CSV files of the above created tables as without them, it is impossible to solve
the questions below. If you are not able to upload the files successfully, do not leave the query
questions. Just write the query to the best of your knowledge. Do not copy. To be graded for the
screenshot answer, you must upload the CSV properly and paste the resulting screenshot of the
queries as asked.
Look at the sum of profits for each Product Sub-Category. Which sub-category is $31,069 below the
average profit across all categories?
Write the Query in box below. [4 Marks]
Paste the screenshot of a portion of the answer below. [1 Marks
Write a query to find the contribution of total Sales by the 'Home Office' Customer Segment in the
year 2012? For example, if in 2012, the total sum of sales across all Customer segments is 100 and
'Home Office' contributes 30 to the sum of sales. Then…
Database
Can you help me with this problem
Chapter 4 Solutions
Database Concepts (7th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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
- Given the following addresses, which two addresses conflict in the cache: The numb of locations in the cache is 2048, the cahche is indexed by address bits 15 to 5 and the tag bits are from 31 to 16. (a) 0x0000 0100 (b) 0x0000 1400 (c) 0x0010 0100 (d) 0x0100 0140arrow_forward5. RetailItem ClassWrite a class named RetailItem that holds data about an item in a retail store. The class should store the following data in attributes: item description, units in inventory, and price. Once you have written the class, write a program that creates three RetailItem objects and stores the following data in them: Description Units in Inventory PriceItem #1 Jacket 12 59.95Item #2 Designer Jeans 40 34.95Item #3 Shirt 20 24.95arrow_forwardWrite a class named Patient that has attributes for the following data: First name, middle name, and last name Address, city, state, and ZIP code Phone number Name and phone number of emergency contact The Patient class’s _ _init_ _ method should accept an argument for each attribute. The Patient class should also have accessor and mutator methods for each attribute. Next, write a class named Procedure that represents a medical procedure that has been performed on a patient. The Procedure class should have attributes for the following data: Name of the procedure Date of the procedure Name of the practitioner who performed the procedure Charges for the procedure The Procedure class’s _ _init_ _ method should accept an argument for each attribute. The Procedure class should also have accessor and mutator methods for each attribute. Next, write a program that creates an instance of the Patient class, initialized with sample data. Then, create three instances of the Procedure class,…arrow_forward
- 1 Vo V₁ V3 V₂ V₂ 2arrow_forwardI want a full report on Sperani security according to Project Mingment.arrow_forwardGiven a 8-bit addressable (256) locations in memory and 32 locations in cache, 3 bits are in the cache Tag. What is the cache location for memory address of 0x0100 0100? Provide the answer in decimal form.arrow_forward
- Q2: Solve the equation using the simplex method Max. Z 13x1 +11x2 Subject to constraints 4x1 +5x21500 5x1 +3x21575 x1 +2x2 <420 x1, x2≥0arrow_forwardBasically, you must build a desktop/android application that utilizes cryptographic techniques/protocols to secure communication (or data at rest). Try to achieve confidentiality, integrity, availability, authentication, non-repudiation (preferably all of them, otherwise few of them based on the requirement).You must demonstrate the use of these cryptographic techniques by showing some outputs/visualization results or captured traffic such as through Wireshark.1. Secure Chat ApplicationDescription: Build an encrypted chat application for desktop or Android that ensures confidentiality, integrity, authentication, and non-repudiation.Features:-- End-to-end encryption using AES-256 or Signal Protocol.--Digital signatures for non-repudiation.--Message integrity verification using HMAC.Secure login using two-factor authentication (2FA).--Server-side availability mechanisms (e.g., load balancing, backup storage). Technologies: Python (PyQt + PyCryptodome), Java (Android), Firebase for…arrow_forwardQ1: Draw the equation of z with constraints according to the graphic method Max Z-3 P1+5 P2 s.t. P1 4 P2 6 3 P1+2 P2 <18 P1, P2 20arrow_forward
- Many employees and suppliers are resistant to adopting the new e-procurement system. They are accustomed to traditional procurement methods and are hesitant to embrace the change. How would you effectively manage this resistance and ensure a smooth transition to the new system?arrow_forwardswitch status (learning, listening, for wording) Write a detailed explanation of the topic. networkarrow_forwardSolve thisarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning
Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage Learning
Prelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson Education
Sc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY