Database Management System MCQs – Practice Test 6 (Chapter 11)

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Relational Algebra & Calculus MCQ – Practice Test 6 PDF Download

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

LEFT OUTER JOIN
FULL OUTER JOIN
HALF OUTER JOIN
DOWNWARD JOIN

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

number of entities
number of attributes
number of columns
number of rows

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

outer relations
inner joins
outer joins
inner relations

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

relation nodes
query nodes
truth nodes
local nodes

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

CHI-JOIN
PI-JOIN
SIGMA-JOIN
EQUI JOIN

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