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Selection Operation in SQL Multiple Choice Questions with Answers – PDF Download

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Selection Operation in SQL MCQs PDF Download – Prep Test

MCQ 1: The lowest-level operator in query-processing to access data, is:

Pointers
Locators
Indices
File scan

MCQ 2: File scans are algorithms for searching that is used to locate and retrieve records, fulfilling a:

Projection condition
Selection condition
Hashing condition
Evaluation plan condition

MCQ 3: The A1 way of performing a selection operation is known as:

Composite Search
Uniform Search
Linear Search
Dynamic Search

MCQ 4: In the A1 search, to satisfy the selection operation the system scans each file block and tests:

Secondary index
All records
Primary index
Equality on nonkey

MCQ 5: File scans are algorithms for:

Searching
Locating
Retrieving
Indexing

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