Database Management System MCQs - Chapter 11

Relational Algebra and Calculus MCQ (Multiple Choice Questions) PDF - 6

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The MCQ: If the common attributes of two relations are classified as join attributes then the OUTER UNION must be equal to; "Relational Algebra and Calculus" App Download Android & iOS (Free) with answers full outer join, left outer join, half outer join and downward join to learn computing courses online. Practice relational operations quiz questions, download Apple Book (Free Sample) for accelerated computer science degree online.

Relational Algebra & Calculus Questions & Answers PDF Download: MCQ Quiz 6

MCQ 26: If the common attributes of two relations are classified as join attributes then the OUTER UNION must be equal to

A) LEFT OUTER JOIN

B) FULL OUTER JOIN

C) HALF OUTER JOIN

D) DOWNWARD JOIN

MCQ 27: The degree of the PROJECT operation is equal to

A) number of entities

B) number of attributes

C) number of columns

D) number of rows

MCQ 28: The operations used to combine multiple relations to present information in single table are classified as

A) outer relations

B) inner joins

C) outer joins

D) inner relations

MCQ 29: In the notation for query graphs, the single circles are used to represent

A) relation nodes

B) query nodes

C) truth nodes

D) local nodes

MCQ 30: The JOIN operation in which only equality operator is used is classified as

A) CHI-JOIN

B) PI-JOIN

C) SIGMA-JOIN

D) EQUI JOIN

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