Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Videos > RRB JE for Computer Science Engineering > Relational Algebra: Assignment Operation
Relational Algebra: Assignment Operation Video Lecture | RRB JE for Computer Science Engineering - Computer Science Engineering (CSE)
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FAQs on Relational Algebra: Assignment Operation Video Lecture - RRB JE for Computer Science Engineering - Computer Science Engineering (CSE)
| 1. What is the assignment operation in relational algebra? |  |
Ans. The assignment operation in relational algebra is used to assign a new name to the result of a query expression. It allows users to store the result of a query in a temporary relation for further processing.
| 2. How is the assignment operation represented in relational algebra notation? | |
Ans. In relational algebra, the assignment operation is represented using the following syntax: R1 ← πA,B(R2), where R1 is the name of the new relation, A,B are the attributes selected, and R2 is the original relation.
| 3. Can the assignment operation in relational algebra be used to update data in a database? | |
Ans. No, the assignment operation in relational algebra is not used to update data in a database. It is mainly used to store the result of a query in a temporary relation, rather than modifying existing data.
| 4. What are some common applications of the assignment operation in relational algebra? | |
Ans. The assignment operation is commonly used in relational algebra for tasks such as creating views, simplifying complex queries, and breaking down large queries into smaller, more manageable parts.
| 5. Is the assignment operation reversible in relational algebra? | |
Ans. Yes, the assignment operation in relational algebra is reversible. Users can assign the result of a query to a new relation, perform further operations on it, and then assign the modified result back to another relation if needed.
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Nov 22, 2024 Last updated |
Video Description: Relational Algebra: Assignment Operation for Computer Science Engineering (CSE) 2024 is part of RRB JE for Computer Science Engineering preparation.
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