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MCQs

Total Questions : 30 | Page 1 of 3 pages
Question 1. A binary relationship is which of the following?
  1.    A relationship between two attributes
  2.    A relationship between two entities
  3.    An attribute with two different relationships
  4.    An entity with two different relationships
 Discuss Question
Answer: Option B. -> A relationship between two entities
Question 2. 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?
  1.    Derived attribute
  2.    Optional one cardinality
  3.    Multi-valued attribute
  4.    Weak entity
 Discuss Question
Answer: Option D. -> Weak entity
Question 3. A relationship is which of the following?
  1.    A person, place, or thing
  2.    Property or characteristic of an entity
  3.    Link between entities
  4.    Weak entity
 Discuss Question
Answer: Option C. -> Link between entities
Question 4. Which of the following conditions should exist if you want to convert a relationship to an associative entity?
  1.    Some of the relationships for the participating entities are 'many'.
  2.    The resulting associative entity has an independent meaning.
  3.    The resulting associative entity has no attributes.
  4.    All of the above.
 Discuss Question
Answer: Option B. -> The resulting associative entity has an independent meaning.
Question 5. A good identifier is which of the following?
  1.    One that can change over time
  2.    Can be null
  3.    One that is unique
  4.    Be intelligent
 Discuss Question
Answer: Option C. -> One that is unique
Question 6. A rectangle represents which of the following in an ERD?
  1.    Attribute
  2.    Entity
  3.    Optional One
  4.    Relationship
 Discuss Question
Answer: Option B. -> Entity
Question 7. An oval represents which of the following in an ERD?
  1.    Attribute
  2.    Entity
  3.    Optional One
  4.    Relationship
 Discuss Question
Answer: Option A. -> Attribute
Question 8. An entity name should be which of the following?
  1.    A singular noun
  2.    Specific to the organization
  3.    Concise
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 9. When the minimum and maximum number of instances of an entity is one, you know which of the following?
  1.    Mandatory one
  2.    Optional one
  3.    Mandatory many
  4.    Cannot tell
 Discuss Question
Answer: Option A. -> Mandatory one
Question 10. An attribute name should be which of the following?
  1.    Singular verb or verb phrase
  2.    Follow a standard format
  3.    Use a alias
  4.    All of the above
 Discuss Question
Answer: Option B. -> Follow a standard format

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