Database Systems Exam Prep MCQs – Mock Test 412

Basic Structure of SQL Queries MCQ with Answers PDF Download – Test 412

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Free "Basic Structure of SQL Queries MCQs" App Download (Android & iOS): Query for finding the Distinct department names of all instructors, would be; MCQ with answers: select dept_name distinct from instructor;, select distinct dept_name from instructor;, define distinct dept_name from instructor, and define dept_name distinct from instructor;. Practice Introduction to SQL Questions and Answers, Google e-Book to download free chapter to gain online knowledge.

Basic Structure of SQL Queries MCQ – Mock Test 412 PDF Download

MCQ 2056: 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 2057: SQL statements can be embedded with in general-purpose programming languages, like:

C
C++
JAVA
All of the Above

MCQ 2058: A relation may include the primary key of another relation, among its attributes, known as:

Neighbor key
Foreign key
Candidate key
Super key

MCQ 2059: The basic operations of relational algebra includes Select, project, union, set difference, Cartesian product, and:

Rename operation
Dimensional operations
OLAP operations
Cube operation

MCQ 2060: When multiple transactions update the system concurrently, to ensure the consistency of the database, is the responsibility of:

Concurrency-control manager
File manager
Buffer manager
Authorization manager

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