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The MCQ: Lowest-level operator in query-processing to access data, is; "Selection Operation in SQL MCQ" App Download [Free] with answers: pointers, locators, indices, and file scan for online computer science degrees. Practice Selection Operation in SQL Quiz Questions, download Apple Book (Free Chapter) for applied computer science.

Selection Operation in SQL MCQs PDF Download – Prep Test

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

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

MCQ 2: 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

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

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

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

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

MCQ 5: File scans are algorithms for:

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

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