Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Videos > Question Bank for GATE Computer Science Engineering > Relational Algebra Basics - 4
Relational Algebra Basics - 4 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
|
63 videos|7 docs|165 tests
|
FAQs on Relational Algebra Basics - 4 Video Lecture - Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
| 1. What is relational algebra? |  |
Relational algebra is a mathematical framework used to perform operations on relational databases. It provides a set of operations to manipulate and query data stored in tables, such as selection, projection, join, union, and intersection.
| 2. How does selection operation work in relational algebra? | |
The selection operation in relational algebra is used to retrieve rows from a table that satisfy a specific condition. It is represented by the sigma (σ) symbol. For example, σ(age > 20)(Students) will retrieve all the rows from the Students table where the age is greater than 20.
| 3. What is the purpose of the projection operation in relational algebra? | |
The projection operation in relational algebra is used to select specific columns from a table, creating a new table with only those columns. It is represented by the pi (π) symbol. For example, π(name, age)(Students) will create a new table with only the name and age columns from the Students table.
| 4. How does the join operation work in relational algebra? | |
The join operation in relational algebra combines two or more tables based on a common attribute or condition. It is represented by the ⨝ symbol. For example, Students ⨝ Courses will combine the Students and Courses tables based on a common attribute, such as student ID, and create a new table with the combined data.
| 5. What is the difference between union and intersection operations in relational algebra? | |
The union operation in relational algebra combines rows from two tables, removing duplicates, and creates a new table with the combined data. The intersection operation, on the other hand, returns only the common rows between two tables. Union is represented by the ∪ symbol, while intersection is represented by the ∩ symbol.
Related Exams
About this Video
|
4.93/5 Rating |
|
Nov 18, 2024 Last updated |
Video Description: Relational Algebra Basics - 4 for Computer Science Engineering (CSE) 2024 is part of Question Bank for GATE Computer Science Engineering preparation.
The notes and questions for Relational Algebra Basics - 4 have been prepared according to the Computer Science Engineering (CSE) exam syllabus.
Information about Relational Algebra Basics - 4 covers all important topics for Computer Science Engineering (CSE) 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Relational Algebra Basics - 4.
Introduction of Relational Algebra Basics - 4 in English is available as part of our Question Bank for GATE Computer Science Engineering for Computer Science Engineering (CSE) & Relational Algebra Basics - 4 in
Hindi for Question Bank for GATE Computer Science Engineering course. Download more important topics related with notes, lectures and mock test series for
Computer Science Engineering (CSE) Exam by signing up for free.
Description
Video Lecture & Questions for Relational Algebra Basics - 4 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE) - Computer Science Engineering (CSE) full syllabus preparation | Free video for Computer Science Engineering (CSE) exam to prepare for Question Bank for GATE Computer Science Engineering.
Information about Relational Algebra Basics - 4
Here you can find the meaning of Relational Algebra Basics - 4 defined & explained in the simplest way possible.
Besides explaining types of Relational Algebra Basics - 4 theory, EduRev gives you an ample number of questions to practice Relational Algebra Basics - 4 tests,
examples and also practice Computer Science Engineering (CSE) tests.
|
63 videos|7 docs|165 tests
|
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Exam
,shortcuts and tricks
,Summary
,Free
,MCQs
,video lectures
,Relational Algebra Basics - 4 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,ppt
,Relational Algebra Basics - 4 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Important questions
,Extra Questions
,practice quizzes
,Relational Algebra Basics - 4 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,study material
,Semester Notes
,past year papers
,Previous Year Questions with Solutions
,Sample Paper
,mock tests for examination
,Viva Questions
,Objective type Questions
;
Study Relational Algebra Basics - 4 on the App
Students of Computer Science Engineering (CSE) can study Relational Algebra Basics - 4 alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Relational Algebra Basics - 4,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Relational Algebra Basics - 4 is prepared as per the latest Computer Science Engineering (CSE) syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup