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Computer Science Engineering (CSE) Exam  >  Computer Science Engineering (CSE) Tests  >  Database Management System (DBMS)  >  Test: Joins Operations - Computer Science Engineering (CSE) MCQ

Test: Joins Operations - Computer Science Engineering (CSE) MCQ


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10 Questions MCQ Test Database Management System (DBMS) - Test: Joins Operations

Test: Joins Operations for Computer Science Engineering (CSE) 2024 is part of Database Management System (DBMS) preparation. The Test: Joins Operations questions and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus.The Test: Joins Operations MCQs are made for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Joins Operations below.
Solutions of Test: Joins Operations questions in English are available as part of our Database Management System (DBMS) for Computer Science Engineering (CSE) & Test: Joins Operations solutions in Hindi for Database Management System (DBMS) course. Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free. Attempt Test: Joins Operations | 10 questions in 30 minutes | Mock test for Computer Science Engineering (CSE) preparation | Free important questions MCQ to study Database Management System (DBMS) for Computer Science Engineering (CSE) Exam | Download free PDF with solutions
Test: Joins Operations - Question 1
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Which view that contains more than one table in the top-level FROM clause of the SELECT statement:

Detailed Solution for Test: Joins Operations - Question 1

The DELETE statement is used to delete rows in a table. The UPDATE statement is used to update existing records in a table. The INSERT INTO statement is used to insert new records in a table.

Test: Joins Operations - Question 2
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Which join refers to join records from the write table that have no matching key in the left table are include in the result set:

Detailed Solution for Test: Joins Operations - Question 2

A right outer join will return all the rows that an inner join returns plus one row for each of the other rows in the second table that did not have a match in the first table. It is the same as a left outer join with the tables specified in the opposite order.

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Test: Joins Operations - Question 3
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Which product is returned in a join query have no join condition:

Detailed Solution for Test: Joins Operations - Question 3

A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates.

Test: Joins Operations - Question 4
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How many join types in join condition:
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INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN, EQUIJOIN.

Test: Joins Operations - Question 5
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A_____ is a query that retrieves rows from more than one table or view:
Detailed Solution for Test: Joins Operations - Question 5

An SQL join clause combines records from two or more tables in a database. It creates a set that can be saved as a table or used as it is. A JOIN is a means for combining fields from two tables by using values common to each.

Test: Joins Operations - Question 6
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Which operation are allowed in a join view:
Detailed Solution for Test: Joins Operations - Question 6

The DELETE statement is used to delete rows in a table. The UPDATE statement is used to update existing records in a table. The INSERT INTO statement is used to insert new records in a table.

Test: Joins Operations - Question 7
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Which is a join condition contains an equality operator:
Detailed Solution for Test: Joins Operations - Question 7

An equi-join is a specific type of comparator-based join, that uses only equality comparisons in the join-predicate.

Test: Joins Operations - Question 8
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Which are the join types in join condition:
Detailed Solution for Test: Joins Operations - Question 8

INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN, EQUIJOIN are the types of joins.

Test: Joins Operations - Question 9
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Which oracle is the join condition is specified using the WHERE clause:
Detailed Solution for Test: Joins Operations - Question 9

Oracle 9i is a version of the Oracle Database. The i stands for “Internet” to indicate that 9i is “Internet ready”.

Test: Joins Operations - Question 10
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Which of the following Relational Algebra operations can be used when you want to keep all the tuples of the first relation irrespective of whether or not they have matching tuples in the second relation?
Detailed Solution for Test: Joins Operations - Question 10

The answer to the above question is Option (b) Left-outer Join
A JOIN clause is used to combine rows from two or more tables, based on a related column between them.
Here are the different types of the JOINs in SQL:

  • (INNER) JOIN: Returns records that have matching values in both tables
  • LEFT (OUTER) JOIN: Returns all records from the left table, and the matched records from the right table
  • RIGHT (OUTER) JOIN: Returns all records from the right table, and the matched records from the left table
  • FULL (OUTER) JOIN: Returns all records when there is a match in either left or right table

We can see that left join keeps all the elements from the first relation irrespective of their presence in second relation.
Diagram to visualize joins:

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