A UNION query is which of the following?

Question

Options:

A . Combines the output from no more than two queries and must include the same number of columns.

B . Combines the output from no more than two queries and does not include the same number of columns.

C . Combines the output from multiple queries and must include the same number of columns.

D . Combines the output from multiple queries and does not include the same number of columns.

Answer: Option C

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More Questions on This Topic :

Question 1. Which of the following statements is true concerning subqueries?....

Question 2. Which of the following is a correlated subquery?....

Question 3. How many tables may be included with a join?....

Question 4. The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTO....SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ;

Question 5. Which of the following is true concerning triggers?....

Question 6. Triggers are stored blocks of code that have to be called in order to operate.....

Question 7. The joining technique is useful when data from several relations are to be retrieved and displayed and the relationships....retrieved and displayed and the relationships are not necessarily nested.

Question 8. There should be one condition within the WHERE clause for each pair of tables being joined.....

Question 9. Subqueries can be nested multiple times.....

Question 10. The code to create triggers and routines is stored in only one location and is administered centrally.....

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