Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Videos > Question Bank for GATE Computer Science Engineering > Relational Algebra Basics - 2
Relational Algebra Basics - 2 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
|
63 videos|7 docs|165 tests
|
FAQs on Relational Algebra Basics - 2 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 retrieve and manipulate data stored in relational databases. It provides a set of operations that can be performed on relational tables, such as selection, projection, union, intersection, difference, join, and division.
| 2. What are the basic operations in relational algebra? | |
The basic operations in relational algebra include selection, projection, union, intersection, difference, join, and division.
- Selection is used to retrieve rows that satisfy a certain condition.
- Projection is used to retrieve specific columns from a table.
- Union combines two tables and outputs all distinct rows from both tables.
- Intersection outputs only the rows that are common to both tables.
- Difference outputs the rows that are present in one table but not in the other.
- Join combines two tables based on a common attribute or condition.
- Division is used to find all possible combinations of rows from one table that, when joined with another table, produce a certain result.
| 3. How is relational algebra different from SQL? | |
Relational algebra is a procedural query language, while SQL (Structured Query Language) is a declarative query language. In relational algebra, the focus is on specifying how to retrieve and manipulate data, whereas in SQL, the focus is on specifying what data to retrieve without specifying the specific steps to achieve it. SQL is more user-friendly and widely used in practice, while relational algebra provides a theoretical foundation for understanding and implementing database systems.
| 4. What is the purpose of the join operation in relational algebra? | |
The join operation in relational algebra is used to combine two tables based on a common attribute or condition. It retrieves all the rows from both tables that satisfy the join condition and combines them into a new table. Join is useful for retrieving related data from multiple tables and is a fundamental operation in database systems.
| 5. How is division operation used in relational algebra? | |
The division operation in relational algebra is used to find all possible combinations of rows from one table that, when joined with another table, produce a certain result. It is typically used to solve complex queries involving multiple tables. The division operation is performed by first joining the two tables, then projecting the desired columns, and finally selecting the rows that satisfy the desired condition.
Related Exams
About this Video
|
1.5K Views |
|
4.70/5 Rating |
|
Nov 18, 2024 Last updated |
Video Description: Relational Algebra Basics - 2 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 - 2 have been prepared according to the Computer Science Engineering (CSE) exam syllabus.
Information about Relational Algebra Basics - 2 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 - 2.
Introduction of Relational Algebra Basics - 2 in English is available as part of our Question Bank for GATE Computer Science Engineering for Computer Science Engineering (CSE) & Relational Algebra Basics - 2 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 - 2 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 - 2
Here you can find the meaning of Relational Algebra Basics - 2 defined & explained in the simplest way possible.
Besides explaining types of Relational Algebra Basics - 2 theory, EduRev gives you an ample number of questions to practice Relational Algebra Basics - 2 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
,Relational Algebra Basics - 2 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Semester Notes
,Relational Algebra Basics - 2 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Important questions
,Sample Paper
,MCQs
,Summary
,Free
,Viva Questions
,shortcuts and tricks
,Extra Questions
,mock tests for examination
,study material
,past year papers
,Relational Algebra Basics - 2 Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)
,Previous Year Questions with Solutions
,ppt
,video lectures
,Objective type Questions
,practice quizzes
;
Study Relational Algebra Basics - 2 on the App
Students of Computer Science Engineering (CSE) can study Relational Algebra Basics - 2 alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Relational Algebra Basics - 2,
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 - 2 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