Database Systems: Design Implementation & Management
11th Edition
ISBN: 9781305850378
Author: Coronel
Publisher: Cengage
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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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The exam unit uses the system after the subject registration period has closed. The system will display a list of subjects that have registered students. Using this list, the exam unit will plan out examination week. Examination week lasts 6 days, from Monday to Saturday. For each day, the exam unit will assign a subject to that day. Each day can have a total of 6 examination hours with subjects having 2- hour or 3-hour examinations. For example, if the subjects are 2-hour examinations, then 3 of them can be scheduled for the day and if the subjects are 3-hour examinations, then only 2 of them can be scheduled for the day. There can also be a mixture of 2-hour and 3-hour examinations. If the exam unit schedules too many examination hours for that day then the day resets and the exam unit needs to reschedule again. This process stops when…
Create an ER model for a restaurant. The specifications are as follows:
The customer has an id, name, address and telephone number. The customer can
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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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