Database Systems Exam MCQs – Practice Test 4 (Chapter 18)

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Query Processing MCQs – Practice Test 4 PDF Download

MCQ 16: In case of A4 search algorithm, if the indexing field is not a key, the strategy can retrieve:

Single record
Two records
Multiple records
No records

MCQ 17: Double buffer allows algorithm to function efficiently by performing:

Parallel CPU activities
Parallel I/O activities
Parallel disk sectors
CPU activity parallel with I/O activity

MCQ 18: 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 19: In A4 search algorithm, selection operation can specify an equality condition by using a:

Secondary index
Clustered index
Nonclustered index
Primary index

MCQ 20: The tasks involved in extracting some kind of data from a database known as:

Query processing
Query management
Query statement
Query transaction

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