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- Question
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.
- Correct Answer
- A way to establish an IF-THEN-ELSE in SQL.
- 1. 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
- 2. Which of the following is true concerning a procedure?
Options- A. You do not create them with SQL.
- B. They do not need to have a unique name.
- C. They include procedural and SQL statements.
- D. They are the same thing as a function. Discuss
- 3. Which of the following is one of the basic approaches for joining tables?
Options- A. Subqueries
- B. Union Join
- C. Natural join
- D. All of the above Discuss
- 4. A UNION query is which of the following?
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. Discuss
- 5. 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 WHERE CUSTOMER_T. CUSTOMER_ID = ORDER_T. CUSTOMER_ID
Options- A. Equi-join
- B. Natural join
- C. Outer join
- D. Cartesian join Discuss
- 6. 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
- 7. 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
- 8. How many tables may be included with a join?
Options- A. One
- B. Two
- C. Three
- D. All of the above. Discuss
- 9. 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. Discuss
- 10. 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
Advanced SQL problems
Search Results
Correct Answer: All of the above.
Correct Answer: They include procedural and SQL statements.
Correct Answer: All of the above
Correct Answer: Combines the output from multiple queries and must include the same number of columns.
Correct Answer: Equi-join
Correct Answer: Both consist of procedural code.
Correct Answer: Cartesian join
Correct Answer: All of the above.
Correct Answer: Uses the result of an outer query to determine the processing of an inner query.
Explanation:
Correlated 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.
Correct Answer: Addresses the structuring and manipulation of the data involved.
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