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 4, Problem 4.28RQ
Program Plan Intro
Data model:
A data model is a logical representation of a
The data model can be divided into three types:
- Object based data model.
- Physical data model.
- Record based data model.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
I need help to resolve the following activity
Modern life has been impacted immensely by computers. Computers have penetrated every aspect of oursociety, either for better or for worse. From supermarket scanners calculating our shopping transactionswhile keeping store inventory; robots that handle highly specialized tasks or even simple human tasks,computers do much more than just computing. But where did all this technology come from and whereis it heading? Does the future look promising or should we worry about computers taking over theworld? Or are they just a necessary evil? Provide three references with your answer.
What are the steps you will follow in order to check the database and fix any problems with it? Have in mind that you SHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured.
Provide three refernces with you answer
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
Similar questions
- You are called by your supervisor to go and check a potential data bridge problem. What are the stepsyou will follow in order to check the database and fix any problems with it? Have in mind that youSHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured. Provide three refernces with you answerarrow_forward(A) A cellular system has 12 microcells with 10 channels per cell. The microcells are split into 3 microcells, and each microcell is further split into 4 picocells. Determine the number of channels available in system after splitting into picocelles.arrow_forwardQuestion 8 (10 points) Produce a relational schema diagram that corresponds to the following ER diagram for a Vacation Property Rentals database. Your relational schema diagram should include primary & foreign keys. Upload your relational schema diagram as a PDF document. Don't forget that the relation schemas for "Beach Property" and "Mountain Property" should each have primary keys. FYI: "d" in this notation denotes a subclass. Figure 2: ER Diagram for Question 8 id first RENTER name middle last address phone email 1 signs N id begin date RENTAL AGREEMENT end date amount N street address books city id 1 state address num. rooms PROPERTY zip code base rate type propertyType blocks to beach activity "B" "M" BEACH PROPERTY MOUNTAIN PROPERTYarrow_forward
- Notes: 1) Answer All Question, 2) 25 points for each question QI Figurel shows the creation of the Frequency Reuse Pattern Using the Cluster Size K: (A) illustrates how i and j can be used to locate a co-channel cell. huster 3 Cluster Cluster 2 X=7(i=2,j1)arrow_forwardYou are called by your supervisor to go and check a potential data bridge problem. What are the stepsyou will follow in order to check the database and fix any problems with it? Have in mind that youSHOULD normalize it as well. Describe in full, consider the following taking the database offline is not allowed since people are connected to it and how personal data might be bridged and not secured.Provide three references with you answer.arrow_forwardYou are called by your supervisor to go and check a potential data bridge problem. What are the stepsyou will follow in order to check the database and fix any problems with it? Have in mind that youSHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured. Provide three refernces with you answerarrow_forward
- You are called by your supervisor to go and check a potential data bridge problem. What are the stepsyou will follow in order to check the database and fix any problems with it? Have in mind that youSHOULD normalize it as well. Describe in full, consider the following:• Taking the database offline is not allowed since people are connected to it.• Personal data might be bridged and not secured. Provide three refernces with you answer from websitesarrow_forwardModern life has been impacted immensely by computers. Computers have penetrated every aspect of oursociety, either for better or for worse. From supermarket scanners calculating our shopping transactionswhile keeping store inventory; robots that handle highly specialized tasks or even simple human tasks,computers do much more than just computing. But where did all this technology come from and whereis it heading? Does the future look promising or should we worry about computers taking over theworld? Or are they just a necessary evil? Provide three references with your answer.arrow_forwardObjective: 1. Implement a custom Vector class in C++ that manages dynamic memory efficiently. 2. Demonstrate an understanding of the Big Five by managing deep copies, move semantics, and resource cleanup. 3. Explore the performance trade-offs between heap and stack allocation. Task Description: Part 1: Custom Vector Implementation 1. Create a Vector class that manages a dynamically allocated array. 。 Member Variables: ° T✶ data; // Dynamically allocated array for storage. std::size_t size; // Number of elements currently in the vector. std::size_t capacity; // Maximum number of elements before reallocation is required. 2. Implement the following core member functions: Default Constructor: Initialize an empty vector with no allocated storage. 。 Destructor: Free any dynamically allocated memory. 。 Copy Constructor: Perform a deep copy of the data array. 。 Copy Assignment Operator: Free existing resources and perform a deep copy. Move Constructor: Transfer ownership of the data array…arrow_forward
- 2.68♦♦ Write code for a function with the following prototype: * Mask with least signficant n bits set to 1 * Examples: n = 6 -> 0x3F, n = 17-> 0x1FFFF * Assume 1 <= n <= w int lower_one_mask (int n); Your function should follow the bit-level integer coding rules Be careful of the case n = W.arrow_forwardHi-Volt Components You are the IT manager at Hi-Voltage Components, a medium-sized firm that makes specialized circuit boards. Hi-Voltage's largest customer, Green Industries, recently installed a computerized purchasing sys- tem. If Hi-Voltage connects to the purchasing system, Green Industries will be able to submit purchase orders electronically. Although Hi-Voltage has a computerized accounting system, that system is not capable of handling EDI. Tasks 1. What options does Hi-Voltage have for developing a system to connect with Green Industries' pur- chasing system? 2. What terms or concepts describe the proposed computer-to-computer relationship between Hi-Voltage and Green Industries? why not? 3. Would Hi-Voltage's proposed new system be a transaction processing system? Why or 4. Before Hi-Voltage makes a final decision, should the company consider an ERP system? Why or why not?arrow_forwardConsider the following expression in C: a/b > 0 && b/a > 0.What will be the result of evaluating this expression when a is zero? What will be the result when b is zero? Would it make sense to try to design a language in which this expression is guaranteed to evaluate to false when either a or b (but not both) is zero? Explain your answerarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Enhanced Discovering Computers 2017 (Shelly Cashm...Computer ScienceISBN:9781305657458Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. CampbellPublisher:Cengage Learning
Fundamentals of Information SystemsComputer ScienceISBN:9781305082168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Management Of Information SecurityComputer ScienceISBN:9781337405713Author:WHITMAN, Michael.Publisher: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
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Enhanced Discovering Computers 2017 (Shelly Cashm...
Computer Science
ISBN:9781305657458
Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Publisher:Cengage Learning
Fundamentals of Information Systems
Computer Science
ISBN:9781305082168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Management Of Information Security
Computer Science
ISBN:9781337405713
Author:WHITMAN, Michael.
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
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781285867168
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning