Database Systems MCQs - Chapter 15

Introduction to SQL MCQ (Multiple Choice Questions) PDF - 2

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Introduction to SQL Questions & Answers PDF Download: MCQ Quiz 2

MCQ 6: The command that is used to add attributes to an existing relation, is said to be

A) Alter

B) Modify

C) Tailor

D) Eliminate

MCQ 7: A subquery that uses a correlation name from an outer query is called a

A) Derived subquery

B) Induced Subquery

C) Deduced subquery

D) Correlated subquery

MCQ 8: The term that allows specification of not only a set of relations, but also information about each relation, is known as

A) Data manipulation language

B) Data Declaration language

C) Data Declaration language

D) Data Definition language

MCQ 9: When comparing a char type with a varchar type, one may expect extra spaces to be added to the

A) char type

B) varchar type

C) Both A and B

D) None of the above

MCQ 10: SQL uses the special keyword in a predicate to test for a null value

A) Escape

B) Unknown

C) Known

D) Null

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