Oracle Academy Section 5 Quiz Answer

Ardo Sarofa Putra Test: Section 5 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer. Section 5 Quiz (Answer all questions in this section) 1. When you resolve a M:M by creating an intersection entity, this new entity will always inherit:

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Nothing is inherited from the original entities and relationship. The UID's from the entities in the original M:M. The attributes of both related entities. A relationship to each entity from the original M:M. (*) Correct 2. Many to many relationships between entities usually hide what?

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Another entity (*) Uniqueness More attributes Another relationship Correct 3. If an intersection entity is formed that contains no attributes of its own, its uniqueness may be modeled by

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Creating new attributes. Barring the relationships to the original entities. (*) Placing the UID attributes from the original entities into the intersection entity. None of the above. Correct 4. When you resolve a M:M, you simply re-draw the relationships between the two original entities; no new entities are created. True or False?

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True False (*)

Ardo Sarofa Putra

Correct 5. A barred relationship on an ERD signifies that the UID of the intersection entity is inherited from the entities that made up the original many to many relationship. True or False?

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True (*) False Correct

Test: Section 5 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer. Section 5 Quiz (Answer all questions in this section) 6. Which of the following pairs of entities is most likely to be modeled as a 1:1 relationship?

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PERSON and FINGERPRINT (*) CAR and WHEEL TEACHER and SUBJECT AREA TREE and BRANCH Correct 7. What relationship is described by the statements: "Each CUSTOMER may place one or more ORDERs, each ORDER must be placed by one and only one CUSTOMER"

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Many to More Many to Many One to One One to Many (*) Correct 8. If the same relationship is represented twice in an Entity Relationship Model, it is said to be:

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Redundant (*)

Ardo Sarofa Putra Removable Replicated Resourceful Correct 9. Many to many relationships must be left in the Model. It is important to have them documented as M-M. True or False?

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True False (*) Correct 10. Which of the following pairs of entities is most likely to be modeled as a M:M relationship?

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CAR and WHEEL TEACHER and SUBJECT AREA (*) TREE and BRANCH PERSON and FINGERPRINT Correct

Test: Section 5 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer. Section 5 Quiz (Answer all questions in this section) 11. If a relationship can be moved between instances of the entities it connects, it is said to be:

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Recursive Committed Transferable (*) Implicit Correct

Ardo Sarofa Putra 12. If a relationship can NOT be moved between instances of the entities it connects, it is said to be:

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Non-Transferable (*) Optional Transferable Mandatory Correct 13. Every ERD must have at least one non-transferable relationship. True or False?

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True False (*) Correct 14. A non-transferable relationship is represented by which of the following symbols?

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Circle Diamond (*) Heart Triangle Correct 15. Which of the following is an example of a non-transferable relationship

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STUDENT to COURSE EMPLOYEE to DEPARTMENT PERSON to BIRTH PLACE (*) TEACHER to SCHOOL Correct