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MCQs

Total Questions : 61 | Page 1 of 7 pages
Question 1. 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 2. Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
  1.    Weak entity
  2.    Strong entity
  3.    ID-dependent entity
  4.    ID- independent entity
 Discuss Question
Answer: Option A. -> Weak entity
Question 3. 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 4. 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
Question 5. 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 6. Which of the following refers to something that can be identified in the user's work environment, something that the users want to track?
  1.    Entity
  2.    Attribute
  3.    Identifier
  4.    Relationship
 Discuss Question
Answer: Option A. -> Entity
Question 7. In which of the following is a single-entity instance of one type related to many entity instances of another type?
  1.    One-to-One Relationship
  2.    One-to-Many Relationship
  3.    Many-to-Many Relationship
  4.    Composite Relationship
 Discuss Question
Answer: Option B. -> One-to-Many Relationship
Question 8. Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
  1.    Weak entity
  2.    Strong entity
  3.    ID-dependent entity
  4.    ID-independent entity
 Discuss Question
Answer: Option C. -> ID-dependent entity
Question 9. Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity?
  1.    Supertype entity
  2.    Subtype entity
  3.    Archetype entity
  4.    Instance entity
 Discuss Question
Answer: Option A. -> Supertype entity
Question 10. An attribute that names or identifies entity instances is a(n):
  1.    entity.
  2.    attribute.
  3.    identifier.
  4.    relationship.
 Discuss Question
Answer: Option C. -> identifier.

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