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Database Design and ER Model MCQ – Practice Test 10 PDF Download

MCQ 46: In E-R diagrams, the relationship set associating the weak entity set to the identifying strong entity set is represented by:

  1. Diamond
  2. Double Diamond
  3. Rectangle
  4. Double triangle

MCQ 47: The symbol that link attributes of a relationship set to the relationship set in an E-R diagram, is:

  1. Lines
  2. Dashed lines
  3. Double Lines
  4. Arrows

MCQ 48: When an entity in set B is associated with at most one entity in set A, the cardinality is of type:

  1. One-to-many
  2. One-to-one
  3. Many-to-many
  4. All-to-all

MCQ 49: The physical schema of a database is:

  1. Changeable
  2. Fixed
  3. Hard to carry out
  4. Static

MCQ 50: A relationship instance in a given relationship set must be uniquely identifiable from its:

  1. Participating sets
  2. Participating relations
  3. Participating entities
  4. Participating roles

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