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Database Systems Competitive Exam MCQs – Practice Test 5 (Chapter 19)

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RDBMS Interview Questions and Answers MCQs – Practice Test 5 PDF Download

MCQ 21: Languages based on the relational algebra, add a number of useful syntactic features, such as in:

  1. JAVA
  2. XML
  3. SQL
  4. DB2

MCQ 22: The relational algebra defines a set of operations on relations, paralleling the:

  1. Addition operation
  2. Subtraction operation
  3. Multiplication operation
  4. Algebraic operations

MCQ 23: All the matching pairs of tuples are present in the:

  1. Cartesian Product result
  2. Union result
  3. Set difference result
  4. Join result

MCQ 24: The term that provides a set of operations that take one or more relations as input and return a relation as an output, is said to be:

  1. Relational Algebra
  2. Relational calculus
  3. Domain relational algebra
  4. Domain algebra

MCQ 25: A data model based on a collection of tables, is known as:

  1. Entity relationship data model
  2. Relational data model
  3. Object based data model
  4. Semi-structured data model

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