Database Systems Practice Test 95

Relational Databases Quiz PDF: Questions and Answers - 95

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Relational Databases Questions and Answers PDF Download: Quiz 95

MCQ 471: The relational model hides low-level implementation details from

A) Users

B) Developers

C) Both A and B

D) System itself

MCQ 472: The degree of durability in which transaction commits as soon as its written at the primary and the backup site is known to be

A) One-safe

B) Two-very-safe

C) Two-safe

D) Three-safe

MCQ 473: For testing whether a subquery has duplicate tuples in its result, SQL includes a

A) Comparison function

B) Boolean Function

C) Aggregate Function

D) Induced function

MCQ 474: 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 475: At the logical level a record can be described as a

A) Block

B) Type definition

C) Segments

D) Sequences

Database Systems Exam Prep Tests

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