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Database Systems Practice Test 242

Modification of Database MCQ (Multiple Choice Questions) PDF - 242

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Modification of Database MCQ Questions PDF Download: Quiz 242

MCQ 1206: To insert data into a relation, we specify a tuple to be

A) Retrieved
B) Processed
C) Tested
D) Inserted

MCQ 1207: A protocol that permits a transaction to lock a new data item only if it has not yet unlocked any data item, is called

A) Two-phase unlocking protocol
B) One-phase locking protocol
C) Two-phase locking protocol
D) One-phase unlocking protocol

MCQ 1208: The first part, which is the upper half of the rectangle, contains the name of

A) All attributes
B) Entity set
C) Schema
D) Domain

MCQ 1209: The aggregate function that returns the number of the elements in the collection is known as

A) total
B) count
C) whole
D) combine

MCQ 1210: The rolling back of any transaction takes place at the stage of

A) Partially committed
B) Aborted
C) Active
D) Committed

Database Systems Exam Prep Tests

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Database Management System App (Android & iOS)

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Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

Computer Architecture App (Android & iOS)

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DBMS App (Android & iOS)

DBMS App (Android & iOS)