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Study "Constraints in DBMS MCQ" App Download with MCQ: Mapping cardinalities are useful in describing; with answers: unary relationships, binary relationships, composite relationships, and simple relationships. Practice Constraints in DBMS Quiz Questions, download Apple Book (Free Chapter) to strengthen technical DBMS.

Constraints in DBMS MCQs PDF Download – Prep Test

MCQ 1: Mapping cardinalities are useful in describing:

  1. Unary relationships
  2. Binary relationships
  3. Composite relationships
  4. Simple relationships

MCQ 2: The mapping cardinalities can be of type:

  1. 2 types
  2. 3 types
  3. 4 types
  4. 5 types

MCQ 3: The appropriate mapping cardinality for a particular relationship set depends on:

  1. Model
  2. Schema
  3. Situation
  4. Domain

MCQ 4: The structure of the primary key for the relationship set depends on the:

  1. Entity sets
  2. Roles
  3. Mapping cardinalities
  4. Mapping expression

MCQ 5: An entity set E in a relationship set R is said to be total if every entity in E participates in:

  1. At least one relationship in R
  2. All relationships in R
  3. None relationship in R
  4. Few relationship in R

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