Question: Which of the following Statements stands true for Right outer-join? <ol> <li>The left outer join takes all tuples in the left relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> <li>It pads tuples from the right relation that did not match any from the left relation with nulls and adds them to the result of the natural join.</li> <li>it pads tuples from the left relation that did not match any from the right relation, as well as tuples from the right relation that did not match any from the left relation, and adding them to the result of join</li> <li>It takes all tuples in the right relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> </ol>
Answer:
MCQ: Which of the following Statements stands true for Right outer-join? <ol> <li>The left outer join takes all tuples in the left relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> <li>It pads tuples from the right relation that did not match any from the left relation with nulls and adds them to the result of the natural join.</li> <li>it pads tuples from the left relation that did not match any from the right relation, as well as tuples from the right relation that did not match any from the left relation, and adding them to the result of join</li> <li>It takes all tuples in the right relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> </ol>
Correct Answer:
A. Only 1
Discuss a Question
Related Questions
- 1. Which of the following Statements stands true for Full outer-join? <ol> <li>The left outer join takes all tuples in the left relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> <li>It pads tuples from the right relation that did not match any from the left relation with nulls and adds them to the result of the natural join.</li> <li>it pads tuples from the left relation that did not match any from the right relation, as well as tuples from the right relation that did not match any from the left relation, and adding them to the result of join</li> <li>It takes all tuples in the right relation that did not match with any tuple in the right relation, pads the tuples with null values for all other attributes from the right relation, and add them to the result of the natural join.</li> </ol>
- 2. The tuple relational calculus is a ___________Query Language.
- 3. Which of the following uses domain variable that take on values from an attributes domain, rather that values for an entire tuple.?
- 4. An expression <em>{<X1,X2,….Xn > | P(X1,X2,….Xn)}</em> , Where <em>X1,X2,….Xn</em> represent Domain variable. P represents a formula composed of atoms. This expression is of the of the following?
- 5. SQL is based on______
- 6. QBE is based on______
- 7. Datalog is based on______
- 8. The Domain relational calculus is a ___________Query Language.
- 9. In _______ transmission, the channel capacity is shared by both communicating devices at all times
- 10. In the original ARPANET, _______ were directly connected together
You may be interested in:
Advanced Database Management System MCQsRecently Added Articles
How Can AI Simplify the Academic Life of Students?
Last updated on: April 16, 2025Posted by: ExamRadar
Want to Clear IBPS RRB PO? Master These Mock Test Hacks!
Last updated on: March 10, 2025Posted by: ExamRadar
Top AI Tools for Instantly Detecting Plagiarized Writing
Last updated on: December 5, 2024Posted by: ExamRadar
Applying Algorithmic Trading Techniques to Forex: Insights for Programmers and Data Scientists
Last updated on: November 22, 2024Posted by: ExamRadar
Image to Text Conversion Made Easy: Online Tool Insights
Last updated on: April 12, 2024Posted by: ExamRadar
