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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main function of the Union operation in Relational Algebra?
💡 Hint: Think about merging two lists without duplicates.
Question 2
Easy
Explain what the Select operation does.
💡 Hint: How do you choose which rows to display from a table?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What operation combines unique rows from two tables?
- Intersection
- Union
- Difference
💡 Hint: Consider how might you merge two separate lists.
Question 2
True or False: The Cartesian Product operation often creates useful combinations of data.
- True
- False
💡 Hint: Think about how many combinations you'd get from a smaller example.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given two tables of students, create a Union of both tables that includes only unique students enrolled.
💡 Hint: Check for the uniqueness of rows in both tables.
Question 2
Create a query that selects employees from a table whose salaries are greater than 50,000 and projects just their names.
💡 Hint: Combine row filtering with column selection.
Challenge and get performance evaluation