Selection Operation in SQL MCQs Quiz Online PDF Book Download

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MCQ on Selection Operation in SQL Quiz Book Download

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

  1. Pointers
  2. Locators
  3. Indices
  4. File scan

D

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

  1. Projection condition
  2. Selection condition
  3. Hashing condition
  4. Evaluation plan condition

B

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

  1. Composite Search
  2. Uniform Search
  3. Linear Search
  4. Dynamic Search

C

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

  1. Secondary index
  2. All records
  3. Primary index
  4. Equality on nonkey

B

MCQ: File scans are algorithms for

  1. Searching
  2. Locating
  3. Retrieving
  4. Indexing

A