Joins Questions And Answers

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Joins Questions and Answers

1. The____condition allows a general predicate over the relations being joined.

Joins Questions and Answers

2. Which of the join operations do not preserve non matched tuples.

Joins Questions and Answers

3. What type of join is needed when you wish to include rows that do not have matching values?

Joins Questions and Answers

4. How many tables may be included with a join?

Joins Questions and Answers

5. Which are the join types in join condition:

Joins Questions and Answers

6. How many join types in join condition:

Joins Questions and Answers

7. Which join refers to join records from the right table that have no matching key in the left table are include in the result set:

Joins Questions and Answers

8. The operation which is not considered a basic operation of relational algebra is

Joins Questions and Answers

9. In SQL the statement select * from R, S is equivalent to