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Database Systems MCQs – Practice Test 9 (Chapter 4)

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Free Database Design and ER Model MCQs App Download with MCQ: "In E-R diagrams, the discriminator of a weak entity is underlined with a"; with answers: solid line, dashed line, double line, and double dashed line. Solve Basic Structure of SQL Queries Quiz Questions, download Google e-Book (Free Chapter) to learn SQL remotely.

Database Design and ER Model MCQs – Practice Test 9 PDF Download

MCQ 41: In E-R diagrams, the discriminator of a weak entity is underlined with a:

  1. Dashed line
  2. Solid line
  3. Double line
  4. Double dashed line

MCQ 42: When an entity in set B, can be associated with at most one entity in set A, the defined cardinality is said to be of type:

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

MCQ 43: A weak entity set must be associated with another entity set, in order to be:

  1. Executed
  2. Called
  3. Initiation
  4. Meaningful

MCQ 44: A class diagram is similar to an:

  1. E-R diagram
  2. Use case diagram
  3. Activity diagram
  4. Implementation diagram

MCQ 45: The function that an entity plays in a relationship is called:

  1. Entity's role
  2. Entity's participation
  3. Set relationship
  4. Set role

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