
Conceptual Database Modelling
Quiz by Waliullah Ferdous
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
Which of the following statements about an associative entity is false?
Which of the following is the main difference between an EERD and ERD?
Which of the following statements is true for the diagram below? Group them accordingly.

Which of the following accurately describes the difference between total and partial inheritance? Group them accordingly.
Which of the following statements accurately describes the difference between disjoint and overlap constraints?
Ata hospital, staff are rostered for an operation. Every operation would include one staff who is a surgeon, one duty doctor and multiple nurses.
Considering the business rule above, which of the following diagrams is correct?
There are two types of books. Paper and e-books. Books are identified by an ISBN. Name and price of books are recorded. If it is a paper book, weight of the book is recorded. For e-books, downloadURL is recorded. Orders contain multiple paper books or e-books or both. Orders are identified using OrderID. Date and time are recorded for each order.
Considering the business rule above, which of the following diagram is correct?