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Modeling Data in the Organization problems


  • 1. A binary relationship cannot be which of the following?

  • Options
  • A. One-to-One
  • B. One-to-Many
  • C. Many-to-Many
  • D. Zero-to-Zero
  • Discuss
  • 2. A ternary relationship involves how many entities?

  • Options
  • A. 3 or less
  • B. 3
  • C. More than 3
  • D. 3 or more
  • Discuss
  • 3. A good identifier is which of the following?

  • Options
  • A. One that can change over time
  • B. Can be null
  • C. One that is unique
  • D. Be intelligent
  • Discuss
  • 4. An entity name should be which of the following?

  • Options
  • A. A singular noun
  • B. Specific to the organization
  • C. Concise
  • D. All of the above.
  • Discuss
  • 5. A good business rule is which of the following?

  • Options
  • A. Declarative
  • B. Imprecise
  • C. Redundant
  • D. Compound
  • Discuss
  • 6. When the minimum and maximum number of instances of an entity is one, you know which of the following?

  • Options
  • A. Mandatory one
  • B. Optional one
  • C. Mandatory many
  • D. Cannot tell
  • Discuss
  • 7. An oval represents which of the following in an ERD?

  • Options
  • A. Attribute
  • B. Entity
  • C. Optional One
  • D. Relationship
  • Discuss
  • 8. A composite attribute is which of the following?

  • Options
  • A. An attribute that can be broken into components
  • B. An attribute that cannot be broken into components
  • C. Multiple attributes
  • D. An identifier
  • Discuss
  • 9. An attribute name should be which of the following?

  • Options
  • A. Singular verb or verb phrase
  • B. Follow a standard format
  • C. Use a alias
  • D. All of the above.
  • Discuss
  • 10. When the minimum number of instances of an entity is one, you know which of the following?

  • Options
  • A. Mandatory one
  • B. Optional one
  • C. Mandatory many
  • D. Cannot tell
  • Discuss

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