Database Systems Practice Test 346

What is Database System MCQ (Multiple Choice Questions) PDF - 346

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What is Database System Questions and Answers PDF Download: Quiz 346

MCQ 1726: Different users can have access to the same data, possibly even at the same time, is known as

A) Shared-time access

B) Current access

C) Real-time access

D) Concurrent access

MCQ 1727: A query expression in the tuple relational calculus is done as

A) {p| P(t)}

B) {p| t(p)}

C) {t| P(t)}

D) {p| t(t)}

MCQ 1728: The database system before reading or modifying actual data, consults the

A) Physical level

B) Model

C) Data dictionary

D) View level

MCQ 1729: The external language procedures need to deal with null values in

A) In parameters

B) Out parameters

C) Exit parameters

D) Both A and B

MCQ 1730: The final result of the delete would depend on the order in which the tuples are

A) Stored

B) Retrieved

C) Processed

D) Tested

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