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Selection Operation in SQL MCQ with Answers PDF Download

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Database Systems: Selection Operation in SQL MCQs PDF Download

MCQ: The lowest-level operator in query-processing to access data, is

A) Pointers
B) Locators
C) Indices
D) File scan

MCQ: File scans are algorithms for searching that is used to locate and retrieve records, fulfilling a

A) Projection condition
B) Selection condition
C) Hashing condition
D) Evaluation plan condition

MCQ: The A1 way of performing a selection operation is known as

A) Composite Search
B) Uniform Search
C) Linear Search
D) Dynamic Search

MCQ: In the A1 search, to satisfy the selection operation the system scans each file block and tests

A) Secondary index
B) All records
C) Primary index
D) Equality on nonkey

MCQ: File scans are algorithms for

A) Searching
B) Locating
C) Retrieving
D) Indexing

Practice Tests: Database Systems Exam Prep

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