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Additional Relational Algebra Operations Video Lecture | Database Management System (DBMS) - Computer Science Engineering (CSE)

FAQs on Additional Relational Algebra Operations Video Lecture - Database Management System (DBMS) - Computer Science Engineering (CSE)

1. What are some common relational algebra operations used in computer science engineering?

Ans. Some common relational algebra operations used in computer science engineering include selection, projection, set union, set difference, Cartesian product, and join operations.

2. How are relational algebra operations helpful in database management systems?

Ans. Relational algebra operations help in manipulating and querying data in database management systems by providing a theoretical foundation for relational databases and enabling the execution of various operations on tables.

3. Can you provide an example of how selection operation works in relational algebra?

Ans. In relational algebra, the selection operation is used to select rows from a relation that satisfy a specified condition. For example, selecting all employees with a salary greater than $50,000 from an employee table.

4. What is the purpose of the projection operation in relational algebra?

Ans. The projection operation in relational algebra is used to select specific columns from a relation, creating a new relation with only the specified columns. This helps in reducing the amount of data retrieved from a database and improving query performance.

5. How does the join operation work in relational algebra?

Ans. The join operation in relational algebra combines tuples from two different relations based on a common attribute, creating a new relation that includes columns from both relations. This operation is crucial for linking data from multiple tables in a database.

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Oct 18, 2025 Last updated

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Database Management System (DBMS)

62 videos|99 docs|35 tests

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