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- Question
Which of the following is a correlated subquery?
Options- A. Uses the result of an inner query to determine the processing of an outer query.
- B. Uses the result of an outer query to determine the processing of an inner query.
- C. Uses the result of an inner query to determine the processing of an inner query.
- D. Uses the result of an outer query to determine the processing of an outer query.
- Correct Answer
- Uses the result of an outer query to determine the processing of an inner query.
ExplanationCorrelated subquery references a column in the outer query and executes the subquery once for every row in the outer query while Uncorrelated subquery executes the subquery first and passes the value to the outer query. - 1. How many tables may be included with a join?
Options- A. One
- B. Two
- C. Three
- D. All of the above. Discuss
- 2. The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T ;
Options- A. Equi-join
- B. Natural join
- C. Outer join
- D. Cartesian join Discuss
- 3. Which of the following statements is true concerning routines and triggers?
Options- A. Both consist of procedural code.
- B. Both have to be called to operate.
- C. Both run automatically.
- D. Both are stored in the database. Discuss
- 4. A CASE SQL statement is which of the following?
Options- A. A way to establish an IF-THEN-ELSE in SQL.
- B. A way to establish a loop in SQL.
- C. A way to establish a data definition in SQL.
- D. All of the above. Discuss
- 5. Which of the following is true concerning systems information in an RDBMS?
Options- A. RDBMS store database definition information in system-created tables.
- B. This information can be accessed using SQL.
- C. This information often cannot be updated by a user.
- D. All of the above. Discuss
- 6. Features of XML include which of the following?
Options- A. The tags are used to describe the appearance of the content.
- B. Addresses the structuring and manipulation of the data involved.
- C. Governs the display of information in a Web browser.
- D. All of the above. Discuss
- 7. Which of the following is true concerning the standard network protocol for connecting a client to a Web or database server via the Internet?
Options- A. Both TCP and IP are needed.
- B. TCP is needed but IP is not needed.
- C. TCP is not needed but IP is needed.
- D. Neither TCP and IP are needed. Discuss
- 8. An intranet provides which of the following?
Options- A. Connectivity to all customers
- B. Connectivity to selected customers
- C. Connectivity to no customers
- D. Connectivity to all of the above Discuss
- 9. A server-side extension is needed to do what?
Options- A. Allow a request from a client to access the database.
- B. Allow a request from a client to access a HTML-formatted page.
- C. Allow a request from a client to access Web pages.
- D. All of the above. Discuss
- 10. Which of the following is true concerning Web services standards?
Options- A. Led by only one group.
- B. Helped by cooperation between companies.
- C. Not necessary at this time.
- D. Important so that the web can flourish. Discuss
Advanced SQL problems
Search Results
Correct Answer: All of the above.
Correct Answer: Cartesian join
Correct Answer: Both consist of procedural code.
Correct Answer: A way to establish an IF-THEN-ELSE in SQL.
Correct Answer: All of the above.
Correct Answer: Addresses the structuring and manipulation of the data involved.
Correct Answer: Both TCP and IP are needed.
Correct Answer: Connectivity to no customers
Correct Answer: Allow a request from a client to access the database.
Correct Answer: Important so that the web can flourish.
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