Database Systems Practice Test 394

Additional Basic Operations MCQ (Multiple Choice Questions) PDF - 394

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Additional Basic Operations Questions and Answers PDF Download: Quiz 394

MCQ 1966: The special character % is used to match

A) An alphabet only

B) A number only

C) Substring

D) String

MCQ 1967: A relation schema is a set of attributes, but not all sets of attributes are

A) Schemas

B) Relationship sets

C) Domain

D) Multi-leveled

MCQ 1968: The local date and time without time zone is returned with the method

A) timestamp.current

B) current.timestamp

C) localtimestamp

D) system.localtimestamp

MCQ 1969: The type of constraint that relates to more than one lower-level entity set within a single generalization, is said to be

A) System-defined

B) Condition-defined

C) Data-defined

D) User-defined

MCQ 1970: If the argument subquery contains no duplicate tuples, the unique construct returns

A) TRUE

B) False

C) Unknown

D) Exists

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