Exam-style question
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A library system records members, books and loans. Each loan records which member borrowed which book. Which set of entities is most appropriate for the conceptual data model?.
- A.Member, Book and Loan
- B.Name, Title and Date
- C.Library, Address and Telephone
- D.Borrowing, Reading and Returning
Model answer
What a good answer should say
- Member, Book and Loan
Explanation
Why this works
Member, Book and Loan are distinct types of objects about which the system stores data. Name, title and date are attributes rather than entities, while the other options do not represent the main data objects in the requirements.
Common mistake
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