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
Videos
Textbook Question
Chapter 5, Problem 5.23RQ
For your answers to questions 5.20, 5.21, and 5.22, describe a method for obtaining the children for one of the entities in the original data model, given the primary key of the table based on the second entity, Also, describe a method for obtaining the children for the second entity, given the primary key of the table based on the first entity.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Question 3
Consider the following relational schema that consists of five tables. Primary keys are (BOLD and Italicized). Attributes with the same names in different tables are foreign keys.
For time and speed on the Exam the address and name attributes are just one column each.
Person (driver_id, LastName, FirstName, EmailAddress, license, dateOfBirth)
Car (license, model_id, color, report_num, trim)
Accident (report_num, date, location)
Model(model_id, description, year)
PersonInsuranceCompany(driver_id, insurance_company_id, policy_issue_date)
InsuranceCompany(insurance_company_id, name, EmailAddress)
3.1) Draw the corresponding ERD. You can do this at the end of this Word Doc. if you need more space, or use a different tool and upload and extra file, or upload two Word Doc. files (this one and the ERD). You can also NEATLY hand draw it and upload a picture of it.
3.2) Identify all relationships in the ERD that you created in part 3.1. For each relationship, identify the…
Note: Please make sure that all the points/rules must be implemented.Draw the ERD Diagram to create relational model corresponding to the described Scenario. The loan office in a bank receives from various parties, requests to investigate the credit status of aCustomers. Each credit request is identified by a Request ID and is described by a Request Date andRequesting party Name. The loan office also received results of credit checks. A credit check is identifiedBy a credit check ID and is described by the credit check Date and the credit rating. The loan officeMatches credit requests with credit check results. A credit request may be recorded before its resultArrives; a particular credit result may be used in support of several credit requests. Draw ERD for thisSituation.
Requirements:ER Diagram of system implemented in tool such as Sqlyog & Draw.io (Available online).
what is relational model representation of ER/EER model?
A)student(studentno,name,firstname,midinitials,lastname,phone) Primary key: studentno
B)student(studentno,name,phone) Primary key: studentno
C)student(studentno,name,firstname,lastname,phone) Primary key: studentno
D)student(studentno,fistname,lastname,phone) Primary key: studentno
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
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
- Convert the ER diagram in the above question into relational model.arrow_forwardConvert the following Conceptual Model to Relational Model.arrow_forwardThe purpose of the assignment is to facilitate the learning of data modeling concepts through models developed by individuals. Things to be considered in the applications to be developed: Creating a model with at least 15 tables for vaccination tracking system. The characteristics and relationships of the tables are in the model. Step by step analysis of the normalization steps for a table with multiple relationships in the model. It will briefly be stated which entity-tables will be used for what purpose. Only special rules will be added in the relational data model that cannot be directly specified.arrow_forward
- Create an Entity-Relationship Model for the Queen Anne Curiosity Shop The first assignment for the class project is to create an entity-relationship model of the Queen Anne Curiosity Shop database. This assignment requires you to apply the knowledge gained from study of chapter 4 of the textbook. You will create the entity-relationship model using the ERDPlus database modeling tool. The Queen Anne Curiosity Shop database contains the following tables: CUSTOMER (CustomerID, LastName, FirstName, Address, City, State, ZIP, Phone, EmailAddress) EMPLOYEE (EmployeeID, LastName, FirstName, Phone, EmailAddress) VENDOR (VendorID, CompanyName, ContactLastName, ContactFirstName, Address, City, State, ZIP, Phone, Fax, EmailAddress) ITEM (ItemID, ItemDescription, PurchaseDate, ItemCost, ItemPrice, VendorID) SALE (SaleID, CustomerID, EmployeeID, SaleDate, SubTotal, Tax, Total) SALE_ITEM (SaleID, SaleItemID, ItemID, ItemPrice) Note that the above table descriptions follow the textbook convention:…arrow_forwardTransform the given ERD into Relational Model.arrow_forwardConversion of E-R diagram to relational schemaSchema is a correct translation of the E-R diagram submitted with appropriate tables, columns, primary keys, and foreign keys.arrow_forward
- Consider the following relational schema that consists of five tables. Primary keys are (BOLD and Italicized). Attributes with the same names in different tables are foreign keys. The address and name attributes are just one column each. Person (driver_id, LastName, FirstName, EmailAddress, license, dateOfBirth) Car (license, model_id, color, report_num, trim) Accident (report_num, date, location) Model(model_id, description, year) PersonInsuranceCompany(driver_id, insurance_company_id, policy_issue_date) InsuranceCompany(insurance_company_id, name, EmailAddress) 3.1) Draw the corresponding ERD. Draw eligibly!!! Identify all relationships in the ERD that you created in part 3.1. For each relationship, identify the relationship connectivity (cardinality) and write a business rule to describe the relationship.arrow_forwardA data model is a collection of data description constructs. The main purpose of a data modeling is to assist in the understanding of the meaning (semantics) of the data and facilitate communication about the information requirements. Discuss FIVE (5) evaluation criteria for a good data model. [Hint: As a database designer, you have to interview customers, you are required to include questions you may ask to customers in your answers]arrow_forwardHow do you represent one-to-many and many-to-many relationships in a data model?arrow_forward
- What is the difference between the implementation of 1:M unary relationship and M: N unary relationship in a relational data model.arrow_forwardQUESTION 2 Consider the following data about pets, where an owner can own many pets, but a pet belongs to one owner at given time. Pet (petID, OwnerID, OwnerShipDate, petName, OwnerName) Describe and illustrate the process of normalizing the table to 3NF. Show your work step by_step.arrow_forward1. Suppose that the data for analysis includes the attribute age. The age values for the data tuples are (in increasing order) 13, 15, 16, 16, 19, 20, 20, 21, 22, 22, 25, 25, 25, 25, 30, 33, 33, 35, 35, 35, 35, 36, 40, 45, 46, 52, 70. Using the data above, please answer the following questions: b. Use "Normalization with decimal scaling" to change the age value to 25.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
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
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher: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
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Enhanced Entity Relationship Model; Author: Data Science Center;https://www.youtube.com/watch?v=ocQUtXPumdQ;License: Standard YouTube License, CC-BY