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Modeling Data in the Organization problems

  • 1. If there are two entities with a relationship between them, and one of the entities is completely dependent on the other, then which of the following must exist?

  • Options
  • A. Derived attribute
  • B. Optional one cardinality
  • C. Multi-valued attribute
  • D. Weak entity
    • Discuss
  • 2. A binary relationship is which of the following?

  • Options
  • A. A relationship between two attributes
  • B. A relationship between two entities
  • C. An attribute with two different relationships
  • D. An entity with two different relationships
    • Discuss
  • 3. A rectangle represents which of the following in an ERD?

  • Options
  • A. Attribute
  • B. Entity
  • C. Optional One
  • D. Relationship
    • Discuss
  • 4. Which of the following conditions should exist if you want to convert a relationship to an associative entity?

  • Options
  • A. Some of the relationships for the participating entities are "many".
  • B. The resulting associative entity has an independent meaning.
  • C. The resulting associative entity has no attributes.
  • D. All of the above
    • Discuss
  • 5. A relationship is which of the following?

  • Options
  • A. A person, place, or thing
  • B. Property or characteristic of an entity
  • C. Link between entities
  • D. Weak entity
    • Discuss
  • 6. Output reports should be included as part of an ERD.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. A relationship is an association representing the interaction between attributes.

  • Options
  • A. True
  • B. False
    • Discuss
  • 8. A binary relationship is a relationship between two or more entities.

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. Multiple and binary relationships are the same thing.

  • Options
  • A. True
  • B. False
    • Discuss
  • 10. Cardinality specifies the number of instances of one entity that can be associated with each instance of another entity.

  • Options
  • A. True
  • B. False
    • Discuss

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