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Database Management System MCQs – Practice Test 2 (Chapter 12)

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Learn Relational Data Model and Database Constraints Multiple Choice Questions (MCQ Quiz) with Answers PDF to improve programming skills. Download the Relational Data Model and Database Constraints MCQ PDF e-Book, Ch. 12-2 to learn Database Management System Course. Solve Relational Database Schemas Multiple Choice Questions (MCQs), Relational Data Model and Database Constraints quiz with answers PDF for computer science students. Free Relational Data Model and Database Constraints Study App: Download Database Management System MCQ App to learn relational model concepts, database constraints and relational schemas career test to optimize online instruction.

Download Relational Data Model and Database Constraints Study App (iOS & Android) with MCQ: "In a relation schema, each key of schema having more than one key is classified as"; with answers: super key, candidate key, simple key, and parallel key. Practice Constraints in SQL Quiz Questions, download Apple Book (Free Chapter) to improve programming skills.

Relational Data Model & Database Constraints MCQ – Practice Test 2 PDF Download

MCQ 6: In a relation schema, each key of schema having more than one key is classified as:

  1. candidate key
  2. super key
  3. simple key
  4. parallel key

MCQ 7: In the data model schemas, the constraints that are can not be expressed directly are classified as:

  1. application based constraints
  2. semantic constraints
  3. business rules
  4. all of above

MCQ 8: The cardinality in relational data model is considered as:

  1. total number of values
  2. limited number of values
  3. two numbers from set
  4. three numbers from set

MCQ 9: The constraint violated when the given value of attribute is not included in the corresponding domain is:

  1. domain constraint
  2. attribute constraint
  3. key constraint
  4. lock constraint

MCQ 10: If two or more constraints are violated by using insert operation then by default the:

  1. insert is accepted
  2. insert is rejected
  3. insertion permanently blocked
  4. none of above

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