Database Management System Competitive Exam MCQs – Practice Test 5 (Chapter 11)

Relational Algebra and Calculus Multiple Choice Questions and Answers PDF – Test 5

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Free Relational Algebra and Calculus MCQs App Download: Consider two tuples R and S, the maximum size of R and S relations is divided to expected size of join is classified as; MCQ with answers: natural selectivity, equi join selectivity, join selectivity, and theta selectivity. Solve B Trees Indexing Quiz Questions, download Google e-Book (Free Chapter) to access digital resources.

Relational Algebra & Calculus MCQs with Answers PDF Download – Test 5

MCQ 21: As compared to Cartesian product, the tuples which appears in the result by applying JOIN are the ones:

that fulfills the condition
that does not fulfill the condition
that are nested
that are subtracted

MCQ 22: Consider two tuples R and S, the maximum size of R and S relations is divided to expected size of join is classified as:

equi join selectivity
natural selectivity
join selectivity
theta selectivity

MCQ 23: In the notation for query trees, the node which is used to terminate the execution is classified as:

attribute nodes
leaf nodes
stem nodes
root nodes

MCQ 24: The expression used in relational calculus to specify request of retrieval is classified as:

declarative expression
procedural expression
structural expression
functional expression

MCQ 25: The compatibility condition which states that the relations for union and intersection operations must consist of same type of tuples is classified as:

union compatibility
intersect compatibility
row compatibility
column compatibility

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