library contains books, periodicals, and DVDs (no items of other types are available and a given item belongs to only a single category). All these items can be used by the user of the library. Some of the items (books, periodicals, and DVDs) are only reference items, and others can be borrowed by the users. There are two types of users; registered users and temporary users. While registered users can borrow up to 100 items, the temporary users can borrow only 2 items at a time. In the initial work of the EER modeling, your teammates have identified Item, User, and ItemCopy as entities. Which of the following statements are correct about a possible EER model for this set of requirements? The specialization/generalization hierarchy for items that involve borrowing items and reference items has an optional participation constraint. The specialization/generalization hierarchy for items that involve the books, periodicals, and DVDs has a mandatory participation constraint. The user entity will have specializations registered users and temporary users.
library contains books, periodicals, and DVDs (no items of other types are available and a given item belongs to only a single category). All these items can be used by the user of the library. Some of the items (books, periodicals, and DVDs) are only reference items, and others can be borrowed by the users. There are two types of users; registered users and temporary users. While registered users can borrow up to 100 items, the temporary users can borrow only 2 items at a time. In the initial work of the EER modeling, your teammates have identified Item, User, and ItemCopy as entities. Which of the following statements are correct about a possible EER model for this set of requirements? The specialization/generalization hierarchy for items that involve borrowing items and reference items has an optional participation constraint. The specialization/generalization hierarchy for items that involve the books, periodicals, and DVDs has a mandatory participation constraint. The user entity will have specializations registered users and temporary users.
Operations Research : Applications and Algorithms
4th Edition
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Wayne L. Winston
Chapter19: Probabilistic Dynamic Programming
Section19.4: Further Examples Of Probabilistic Dynamic Programming Formulations
Problem 7P
Related questions
Question
- library contains books, periodicals, and DVDs (no items of other types are available and a given item belongs to only a single category). All these items can be used by the user of the library.
- Some of the items (books, periodicals, and DVDs) are only reference items, and others can be borrowed by the users.
- There are two types of users; registered users and temporary users. While registered users can borrow up to 100 items, the temporary users can borrow only 2 items at a time.
In the initial work of the EER modeling, your teammates have identified Item, User, and ItemCopy as entities. Which of the following statements are correct about a possible EER model for this set of requirements?
- The specialization/generalization hierarchy for items that involve borrowing items and reference items has an optional participation constraint.
- The specialization/generalization hierarchy for items that involve the books, periodicals, and DVDs has a mandatory participation constraint.
- The user entity will have specializations registered users and temporary users.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
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.Recommended textbooks for you
Operations Research : Applications and Algorithms
Computer Science
ISBN:
9780534380588
Author:
Wayne L. Winston
Publisher:
Brooks Cole
Operations Research : Applications and Algorithms
Computer Science
ISBN:
9780534380588
Author:
Wayne L. Winston
Publisher:
Brooks Cole