Database Systems MCQs – Practice Test 56 (Chapter 15)

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Introduction to SQL MCQs – Practice Test 56 PDF Download

MCQ 276: The query for finding the Distinct department names of all instructors, would be:

select distinct dept_name from instructor;
select dept_name distinct from instructor;
define dept_name distinct from instructor;
define distinct dept_name from instructor;

MCQ 277: SQL statements can be embedded with in general-purpose programming languages, like:

C
C++
JAVA
All of the Above

MCQ 278: SQL allows duplicates in relations as well as in the results of:

SQL data
SQL query
SQL flag
SQL expressions

MCQ 279: The set of relations in a database must be specified to the system by means of a:

Data Declaration language
Data Definition language
Data processing language
Data manipulation language

MCQ 280: We can test for the existence of duplicate tuples in a subquery by using the:

Like
Not Like
Unique
Not Unique

Introduction to SQL Notes App & e-Book – Database Systems Admission Tests

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