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MCQs

Total Questions : 61 | Page 4 of 7 pages
Question 31. An entity class is a collection of entities and is described by the structure of the entities in that class.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 32. An identifier typically uses more than one attribute.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 33. Relationship classes are associations between entity classes.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 34. A recursive relationship is a relationship between an archetype and an instance of that archetype.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 35. An identifier determines the type of relationship that an entity has.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 36.  Which of the following indicates the maximum number of entities that can be involved in a relationship?
  1.    Minimum cardinality
  2.    Maximum cardinality
  3.    ERD
  4.    Greater Entity Count (GEC)
 Discuss Question
Answer: Option B. -> Maximum cardinality
Question 37.  In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.
  1.    parent
  2.    child
  3.    instance
  4.    subtype
 Discuss Question
Answer: Option A. -> parent
Question 38.  Which type of entity represents an actual occurrence of an associated generalized entity?
  1.    Supertype entity
  2.    Subtype entity
  3.    Archetype entity
  4.    Instance entity
 Discuss Question
Answer: Option D. -> Instance entity
Question 39.  Which of the following indicates the minimum number of entities that must be involved in a relationship?
  1.    Minimum cardinality
  2.    Maximum cardinality
  3.    ERD
  4.    Greater Entity Count (GEC)
 Discuss Question
Answer: Option A. -> Minimum cardinality
Question 40.  A recursive relationship is a relationship between an entity and ________ .
  1.    itself
  2.    a subtype entity
  3.    an archetype entity
  4.    an instance entity
 Discuss Question
Answer: Option A. -> itself

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