Database Systems: Design, Implementation, & Management
11th Edition
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
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Expert Solution & Answer
Chapter 5, Problem 2P
Explanation of Solution
Crow’s Foot ER diagram for Tiny Hospital:
The following data model shows the solution for the given question:
Explanation:
- In the above data model, “Room” and “Patient” are the entities. Here a specialization hierarchy is not taken...
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Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate. Two-Bit Drilling Company keeps information on employees and their insurance dependents. Each employee Hasan employee number, name, date of hire, and title. If an employee is an inspector, then the date of certification and the renewal date for that certification should also be recorded in the system. For all employees, the Social Security number and dependent names should be kept. All dependents must be associated with one and only one employee. Some employees will not have dependents, while others will have many dependents.
Draw an ER diagram for the following scenario-
• An instructor has an ID, a name, and a phone number. An instructor teaches a course
• A course has a code, course name, credits, and an instructor. Each course uses a textbook.
• A textbook has ISBN, name, publisher, editor, and authors.
Your ER diagram should have entities, attributes, composite attribute, multivalued attribute, key attributes, binary relationships, and a total participation. Explain your rationale behind each design choice.
Please draw the ER diagram on paper showing all seperate parts for each instructor, course and textbook. Showing each connection seperately and explaining which connection is which
Bell State University Scenario
Draw a detailed ERD with primary keys, foreign keys, and all provided attributes. If none are given in the scenario, provide at least one additional attribute for each entity.
Scenario:
When a person applies for a staff position Bell State University in the Chicago area, information about that person, including his or her social security number, name, address, and phone is stored. People applying for staff positions do not apply for a specific job, but apply for a job class. For example, a person might apply for a “Java programmer” job class position. Information stored about each job class includes a unique job code, a description, and a pay range. Each job applicant is assigned to an employment rep who processes the application and helps the job applicant with any questions. Information stored about the employment reps include their unique employee numbers, names, and phone numbers. Job applicants are not restricted to applying for a single job…
Chapter 5 Solutions
Database Systems: Design, Implementation, & Management
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is the difference between partial...Ch. 5 - Prob. 7RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 9RQCh. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 16RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
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