Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 4, Problem 4.26RQ
Explanation of Solution
Business rule:
Business rules define the entities, relationships, and attributes used in the
- It includes the process, tactics, aspects, and aesthetics of the business.
- It is the statement used to define or limit some business feature.
- It is planned to declare the business structure or to organize the behavior of business.
An example of a business rule for the question “4...
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Give an example of a business rule for your work for question 4.17.
For question 4.17, provide an example of a business rule from your job.
Consider the following entity relationship diagram.
Booking
Employee
Room
Building
• Booking ID
• Employee ID
• Building ID
• Room ID
• First Name
• Room ID P
• Name
Description
• Employee ID
• Name
Last Name
• Date
• Campus Zone
• Email Address
• Capacity
• Start Time
• Map Coordinates
Phone
• Bookable
• End Time
For each statement below, use the drop-down box to indicate whether it is true (answer 1) or false (answer2), according to the design decisions encoded in the ERD.
Every booking is associated with exactly one employee.
✓ Every employee is associated with at most one booking.
✓ A building may contain no rooms that are recorded in the database.
Each room may have many bookings.
1. True
✓ A room must have at least one booking.
2. False
✓ A booking can be associated with many employees.
An employee may have no phone number recorded.
✓ A room must have its capacity recorded.
✓ A building is uniquely identified by its map coordinates.
Chapter 4 Solutions
Database Concepts (8th 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
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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
- What is the solution for question 9?arrow_forwardExplain the two types of participation constraint.arrow_forwardAssignment: Problem #7 from Chapter 4 of the textbook. The case study is United Helpers. With the use of Microsoft Visio, draw YOUR entity relationship diagram (ERD) using Crow's foot notation to indicate entities, relationships, optionalities, connectivities and cardinalities. In addition, be sure to include a heading on your ERD with a brief descriptive title, your name, and a date. It is suggest that you write out business rules but the rules do not need to be submitted. 7. How would you (graphically) identify each of the following ERM components in a Crow’s Foot notation? an entity the cardinality (0,N) a weak relationship a strong relationshiparrow_forward
- Find the names of all the managers who manage more than 10 employees.arrow_forwardWrite the business rules that are reflected in the ERD shown in Figure P2.15. (Note that the ERD reflects some simplifying assumptions. For example, each book is written by only one author. Also, remember that the ERD is always read from the “1” to the “M” side, regardless of the orientation of the ERD components.) FIGURE P2.15 THE CROW’S FOOT ERD FOR PROBLEM 15arrow_forwardKindly discuss this diagram.arrow_forward
- Create an ERD for a car dealership and also show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. The dealership sells both new and used cars, and it operates a service facility. Base your design on the following business rules: A salesperson may sell many cars, but each car is sold by only one salesperson. A customer may buy many cars, but each car is bought by only one customer. A salesperson writes a single invoice for each car he or she sells. A customer gets an invoice for each car he or she buys. A customer may come in just to have his or her car serviced; that is, a customer need not buy a car to be classified as a customer. When a customer takes one or more cars in for repair or service, one service ticket is written for each car. The car dealership maintains a service history for each of the cars serviced. The service records are referenced by the car’s serial number. A car brought in for service can be worked on by…arrow_forwardQuestion 6 Full explain this question very fastarrow_forwardGive the table attached What is OldStooges ∩ NewStooges? What is OldStooges – NewStooges?arrow_forward
- Assume that a primary key's constituent attribute is also a candidate key. What would your answer be?arrow_forwardCreate a Crow's Foot ERD for the following description: The KwikTite Corporation operates many factories. Each factory is located in a region, and each region can be "home" to many of KwikTite's factories. Each factory has many employees, but each employee is employed by only one factory.arrow_forwardWEEK 8 ASSIGNMENT create a star schema for the Bob's Fixit Group Case Study . The star schema needs to support the analysis or measurement of material price by suppliers, date, and jobs. Case Study Bob owns a small company called Bob’s Home repairs. He does the small home repair jobs that the large companies pass by. Need some woodwork or wood furniture fixed? Call Bob. Here is how the business works: Someone calls Bob and asks him to bid on a job. He drives over, looks at the situation, and gives them a bid. Sometimes it is an official looking bid by mail, and sometimes it is scribbled on notebook paper. He decides how long it will take to do the job (he bills by the hour), how much wood will be needed, any odds and ends that are unique to the job, and an overall price. He moves from job to job and bills customers as he finishes the work. Bob buys items and supplies from a variety of places, but he buys stuff only when it is needed for a particular project. A potential problem:…arrow_forward
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