Database Systems MCQs – Practice Test 14 (Chapter 15)

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Learn Database Systems MCQ App (Android & iOS) with MCQ: "If a correlation name is defined both locally in a subquery and globally in a containing query"; with answers: global definition is applied, local definition is applied, no definition applied, and global and local definitions applied. Practice View of Data Quiz Questions, download Apple Book (Free Chapter) to advance digital coursework.

Introduction to SQL MCQ – Practice Test 14 PDF Download

MCQ 66: If a correlation name is defined both locally in a subquery and globally in a containing query:

Local definition is applied
Global definition is applied
No definition applied
Global and local definitions applied

MCQ 67: To apply the aggregate function not only to a single set of tuples, but to a group of sets of tuples; using the:

Grouped clause
Group by clause
Merge clause
Avg clause

MCQ 68: For testing whether a subquery has duplicate tuples in its result, SQL includes a:

Comparison function
Boolean Function
Aggregate Function
Induced function

MCQ 69: The number of error(s) in the following query is/are:
select count (*)
from course:

MCQ 70: Including commands for specifying constraints that the data stored in the database must satisfy, is said to be the:

Authorization
View definition
Integrity
View declaration

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