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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