TOP 50 GATE Exam Questions You Should Go through Before Your Exam
Published: 2023-12-16 10:11:00

TOP 50 GATE Exam Questions You Should Go through Before Your Exam
Are you gearing up for the GATE exam and feeling puzzled by the term "[Relational Algebra in DBMS](https://www.javatpoint.com/dbms-relational-algebra)"? Fear not! In this article, we will embark on a journey to demystify this concept, making it as clear as a sunny day. So, grab your metaphorical magnifying glass as we delve into the world of databases and relational algebra.
What is GATE Stand for?
GATE Stand for Graduate aptitude Test in Engineering.
Why is Relational Algebra Important for GATE?
Relational Algebra holds a pivotal role in the GATE (Graduate Aptitude Test in Engineering) examination for several reasons. Let's unravel the significance of Relational Algebra in the context of GATE:
•	Industry Relevance:
•	Advanced Data Manipulation:
•	Database System Optimization:
•	Integration with SQL (Structured Query Language):
•	Practical Application in Software Development:
•	Logical Database Design:
•	Query Formulation and Optimization:

10	Mistakes You Should Avoid in GATE Exams?
GATE (Graduate Aptitude Test in Engineering) questions can be difficult to navigate, and avoiding frequent errors is critical for success. Here are some common pitfalls to avoid when answering GATE questions.
•	Underestimating Time Management:
•	Not Reviewing Mistakes:
•	Overemphasis on Certain Topics:
•	Ignoring Previous Year Papers:
•	Lack of Practice:
•	Overlooking Units and Conventions:
•	Incomplete Understanding of the Question:
•	Ignoring Negative Marking:
•	Rushing Through Questions:
•	Neglecting the Basics:

[Top 50 Questions For gate Exams 
](https://questionszilla.blogspot.com/)What is the primary purpose of Relational Algebra in DBMS?
A) Data storage
B) Data retrieval and manipulation
C) User authentication
D) Network communication
Answer: B) Data retrieval and manipulation
Which of the following is a basic operation in Relational Algebra?
A) Merge
B) Combine
C) Selection
D) Aggregation
Answer: C) Selection
What is the result of the UNION operation in Relational Algebra?
A) Intersection of two sets
B) Concatenation of two sets
C) Common elements of two sets
D) Difference of two sets
Answer: B) Concatenation of two sets
Which operation is used to combine tuples from two relations based on a common attribute?
A) Join
B) Project
C) Select
D) Divide
Answer: A) Join
What is the purpose of the PROJECT operation in Relational Algebra?
A) Combine multiple relations
B) Retrieve specific columns from a relation
C) Sort the relation
D) Perform mathematical operations on the relation
Answer: B) Retrieve specific columns from a relation
Which join operation returns only the matching tuples from both relations?
A) Inner Join
B) Outer Join
C) Cross Join
D) Natural Join
Answer: A) Inner Join
What is the purpose of the DIVISION operation in Relational Algebra?
A) Combining tuples
B) Finding common elements
C) Retrieving specific columns
D) Solving relational division queries
Answer: D) Solving relational division queries
In Relational Algebra, what is the result of the INTERSECTION operation?
A) Concatenation of two sets
B) Union of two sets
C) Common elements of two sets
D) Difference of two sets
Answer: C) Common elements of two sets
Which of the following is a unary operation in Relational Algebra?
A) Join
B) Intersection
C) Selection
D) Difference
Answer: C) Selection
What does the RENAME operation in Relational Algebra do?
A) Changes the name of a relation
B) Renames attributes of a relation
C) Renames tuples in a relation
D) Combines two relations with the same name
Answer: B) Renames attributes of a relation
Which of the following is an aggregate function in Relational Algebra?
A) SELECT
B) PROJECT
C) COUNT
D) JOIN
Answer: C) COUNT
In Relational Algebra, what does the NATURAL JOIN operation do?
A) Joins two relations based on common attributes
B) Joins all tuples from both relations
C) Performs a Cartesian Product
D) Excludes common elements from two relations
Answer: A) Joins two relations based on common attributes
Which operation is used to eliminate duplicate tuples from a relation?
A) DISTINCT
B) UNION
C) PROJECT
D) JOIN
Answer: A) DISTINCT
What is the purpose of the CARTESIAN PRODUCT operation in Relational Algebra?
A) Combine tuples from two relations
B) Retrieve specific columns
C) Join based on common attributes
D) Combine all tuples from both relations
Answer: D) Combine all tuples from both relations
Which of the following is a binary operation in Relational Algebra?
A) Projection
B) Selection
C) Intersection
D) Rename
Answer: C) Intersection



In Relational Algebra, what does the DIFFERENCE operation do?
A) Returns the common elements of two sets
B) Returns the concatenation of two sets
C) Returns the difference of two sets
D) Returns the union of two sets
Answer: C) Returns the difference of two sets
What is the primary role of the SELECT operation in Relational Algebra?
A) Combine tuples
B) Sort the relation
C) Retrieve specific rows based on a condition
D) Rename attributes
Answer: C) Retrieve specific rows based on a condition
Which operator is used for combining two relations and eliminating duplicate tuples?
A) UNION
B) PROJECT
C) INTERSECT
D) JOIN
Answer: A) UNION
What is the outcome of the PROJECT operation in terms of columns?
A) All columns from the relation
B) Specific columns from the relation
C) Combined columns from two relations
D) Renamed columns in the relation
Answer: B) Specific columns from the relation

Which of the following is not a join operation in Relational Algebra?
A) Inner Join
B) Outer Join
C) Self Join
D) Project Join
Answer: D) Project Join
What does the UNION operation do when applied to two relations?
A) Returns common elements
B) Returns all tuples from both relations
C) Returns the difference of two sets
D) Returns the intersection of two sets
Answer: B) Returns all tuples from both relations
Which operation is used for combining tuples from two relations, including non-matching tuples as NULL values?
A) Inner Join
B) Outer Join
C) Cross Join
D) Natural Join
Answer: B) Outer Join
What is the primary purpose of the RENAME operation in Relational Algebra?
A) Change the name of a relation
B) Rename attributes of a relation
C) Combine two relations
D) Eliminate duplicate tuples
Answer: B) Rename attributes of a relation
Which operation is used to retrieve unique rows from a relation?
A) DISTINCT
B) UNION
C) INTERSECT
D) JOIN
Answer: A) DISTINCT

What is the outcome of the INTERSECT operation in terms of tuples?
A) All tuples from both relations
B) Common tuples from both relations
C) Difference of tuples from both relations
D) Union of tuples from both relations
Answer: B) Common tuples from both relations
In Relational Algebra, what does the JOIN operation do?
A) Returns the union of two relations
B) Combines tuples based on common attributes
C) Retrieves specific columns from a relation
D) Performs set difference operation
Answer: B) Combines tuples based on common attributes
Which of the following is a binary operation in Relational Algebra?
A) PROJECT
B) SELECT
C) RENAME
D) UNION
Answer: D) UNION
What does the DIFFERENCE operation in Relational Algebra return?
A) Common elements of two sets
B) Concatenation of two sets
C) Difference of two sets
D) Union of two sets
Answer: C) Difference of two sets
Which operation is used to combine all tuples from two relations, creating a Cartesian Product?
A) INTERSECT
B) UNION
C) CROSS JOIN
D) OUTER JOIN
Answer: C) CROSS JOIN
In Relational Algebra, what does the DIVISION operation involve?
A) Combining tuples
B) Finding common elements
C) Retrieving specific columns
D) Solving relational division queries
Answer: D) Solving relational division queries
What is the purpose of the NATURAL JOIN operation in Relational Algebra?
A) Combining all tuples from both relations
B) Joining based on common attributes
C) Performing a Cartesian Product
D) Excluding common elements from two relations
Answer: B) Joining based on common attributes
Which of the following is a unary operation in Relational Algebra?
A) INTERSECT
B) PROJECT
C) JOIN
D) DIFFERENCE
Answer: B) PROJECT
What does the RENAME operation in Relational Algebra allow you to do?
A) Change the name of a relation
B) Rename attributes of a relation
C) Rename tuples in a relation
D) Combine two relations with the same name
Answer: B) Rename attributes of a relation
Which operator is used for eliminating duplicate tuples from a relation in Relational Algebra?
A) DISTINCT
B) UNION
C) PROJECT
D) JOIN
Answer: A) DISTINCT
In Relational Algebra, what is the result of the CONCATENATION operation?
A) Intersection of two sets
B) Union of two sets
C) Common elements of two sets
D) Concatenation of two sets
Answer: D) Concatenation of two sets
Which operation in Relational Algebra is used to combine tuples from two relations, excluding the common tuples?
A) Inner Join
B) Outer Join
C) Cross Join
D) Natural Join
Answer: D) Natural Join
What does the UNION ALL operation in Relational Algebra do?
A) Returns all tuples from both relations
B) Returns common tuples from both relations
C) Returns the difference of tuples from both relations
D) Returns the union of tuples from both relations
Answer: A) Returns all tuples from both relations
In Relational Algebra, what is the purpose of the AGGREGATE operation?
A) Combine tuples
B) Retrieve specific columns
C) Perform aggregation functions (e.g., SUM, AVG)
D) Join two relations based on common attributes
Answer: C) Perform aggregation functions (e.g., SUM, AVG)
Which of the following is a set operation in Relational Algebra?
A) Join
B) Union
C) Project
D) Rename
Answer: B) Union
What is the outcome of the RENAME operation in Relational Algebra in terms of the relation's structure?
A) Changes the structure of the relation
B) Renames the relation itself
C) Renames attributes of a relation
D) Concatenates two relations
Answer: C) Renames attributes of a relation
Which Relational Algebra operation is used to retrieve distinct rows from a relation?
A) SELECT DISTINCT
B) PROJECT DISTINCT
C) UNION DISTINCT
D) DISTINCT
Answer: A) SELECT DISTINCT
What does the DIFFERENCE operation in Relational Algebra return?
A) Concatenation of two sets
B) Union of two sets
C) Difference of two sets
D) Intersection of two sets
Answer: C) Difference of two sets
In Relational Algebra, what does the PROJECT DISTINCT operation involve?
A) Retrieving specific columns
B) Combining tuples from two relations
C) Eliminating duplicate tuples
D) Joining based on common attributes
Answer: C) Eliminating duplicate tuples
Which operation is used to combine tuples from two relations based on a specified condition?
A) Natural Join
B) Theta Join
C) Cross Join
D) Outer Join
Answer: B) Theta Join
What is the purpose of the INTERSECT operation in Relational Algebra?
A) Combine tuples
B) Retrieve common tuples from two relations
C) Perform aggregation functions
D) Eliminate duplicate tuples
Answer: B) Retrieve common tuples from two relations
In Relational Algebra, what does the UNION DISTINCT operation do?
A) Returns common tuples from both relations
B) Returns all tuples from both relations, excluding duplicates
C) Returns the difference of tuples from both relations
D) Returns the union of tuples from both relations
Answer: B) Returns all tuples from both relations, excluding duplicates
Which operation is used to combine all tuples from two relations, creating a Cartesian Product with duplicate tuples?
A) CROSS JOIN
B) INNER JOIN
C) OUTER JOIN
D) NATURAL JOIN
Answer: A) CROSS JOIN
What does the RENAME operation in Relational Algebra help prevent?
A) Duplicate tuples
B) Ambiguity in attribute names
C) Cartesian Product
D) Theta Join
Answer: B) Ambiguity in attribute names
Which of the following operations is used for selecting specific rows based on a condition in Relational Algebra?
A) SELECT
B) PROJECT
C) UNION
D) JOIN
Answer: A) SELECT
What does the OUTER JOIN operation in Relational Algebra return?
A) Only matching tuples from both relations
B) All tuples from both relations, including non-matching tuples as NULL values
C) Common tuples from both relations
D) Concatenation of tuples from both relations
Answer: B) All tuples from both relations, including non-matching tuples as NULL values