Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Videos > Question Bank for GATE Computer Science Engineering > Relational Algebra Basics - 1
Relational Algebra Basics - 1 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
|
63 videos|8 docs|165 tests
|
FAQs on Relational Algebra Basics - 1 Video Lecture - Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
| 1. What is relational algebra? |  |
Relational algebra is a procedural query language used to query and manipulate relational databases. It provides a set of operations to perform various operations like selection, projection, union, intersection, and join on tables in a database.
| 2. What are the basic operations in relational algebra? | |
The basic operations in relational algebra include selection, projection, union, set difference, cartesian product, and join. Selection is used to retrieve specific rows based on a given condition, projection is used to retrieve specific columns from a table, union combines two tables and removes duplicates, set difference returns the records that are present in one table but not in another, cartesian product returns all possible combinations of rows from two tables, and join combines two tables based on a common attribute.
| 3. How does selection operation work in relational algebra? | |
The selection operation in relational algebra is used to retrieve specific rows from a table that satisfy a given condition. It is denoted by the sigma (σ) symbol. The condition is specified using logical operators such as equality (=), inequality (!=), less than (<), greater than (>), etc. The result of the selection operation is a new table that contains only the rows that meet the specified condition.
| 4. What is the difference between union and intersection operations in relational algebra? | |
The union operation in relational algebra combines two tables and removes any duplicate rows, resulting in a new table that contains all the distinct rows from both tables. On the other hand, the intersection operation returns only the common rows between two tables, disregarding any duplicates. In other words, the union operation combines rows from both tables, while the intersection operation only includes rows that exist in both tables.
| 5. How does the join operation work in relational algebra? | |
The join operation in relational algebra combines two tables based on a common attribute or set of attributes. It is denoted by the join (⨝) symbol. The join operation creates a new table by concatenating the rows from both tables where the values in the common attribute(s) match. There are different types of join operations, such as inner join, left join, right join, and full outer join, which determine how the non-matching rows are included in the result.
Related Exams
About this Video
|
7.9K Views |
|
4.65/5 Rating |
|
Dec 18, 2024 Last updated |
Video Description: Relational Algebra Basics - 1 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 - 1 have been prepared according to the Computer Science Engineering (CSE) exam syllabus.
Information about Relational Algebra Basics - 1 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 - 1.
Introduction of Relational Algebra Basics - 1 in English is available as part of our Question Bank for GATE Computer Science Engineering for Computer Science Engineering (CSE) & Relational Algebra Basics - 1 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 - 1 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 - 1
Here you can find the meaning of Relational Algebra Basics - 1 defined & explained in the simplest way possible.
Besides explaining types of Relational Algebra Basics - 1 theory, EduRev gives you an ample number of questions to practice Relational Algebra Basics - 1 tests,
examples and also practice Computer Science Engineering (CSE) tests.
|
63 videos|8 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
practice quizzes
,Semester Notes
,Relational Algebra Basics - 1 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Previous Year Questions with Solutions
,Exam
,Sample Paper
,Relational Algebra Basics - 1 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Important questions
,Free
,Viva Questions
,MCQs
,Objective type Questions
,past year papers
,Extra Questions
,video lectures
,ppt
,study material
,mock tests for examination
,shortcuts and tricks
,Relational Algebra Basics - 1 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Summary
;
Study Relational Algebra Basics - 1 on the App
Students of Computer Science Engineering (CSE) can study Relational Algebra Basics - 1 alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Relational Algebra Basics - 1,
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 - 1 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