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Oracle Database SQL Sample Questions (Q13-Q18):
NEW QUESTION # 13
In which three situations does a transaction complete?
- A. when a data definition language (DDL) statement is executed
- B. when a DELETE statement is executed
- C. when a PL/SQL anonymous block is executed
- D. when a TRUNCATE statement is executed after the pending transaction
- E. when a ROLLBACK command is executed
Answer: A,D,E
Explanation:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm
NEW QUESTION # 14
View the Exhibit and examine the data in the PRODUCT_INFORMATIONtable.
Which two tasks would require subqueries? (Choose two.)
- A. displaying all the products whose minimum list prices are more than average list price of products having the status orderable
- B. displaying the minimum list price for each product status
- C. displaying the total number of products supplied by supplier 102071 and having product status OBSOLETE
- D. displaying the number of products whose list prices are more than the average list price
- E. displaying all supplier IDs whose average list price is more than 500
Answer: A,D
NEW QUESTION # 15
Examine the data in the CUST_NAMEcolumn of the CUSTOMERStable.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikkilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or "MC".
Which query gives the required output?
- A. SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
'Mc';
- B. SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
FROM customers
WHERE SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
LIKE INITCAP ('MC%');
- C. SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
LIKE 'Mc%';
- D. SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
INITCAP ('MC%');
Answer: C
NEW QUESTION # 16
Examine the structure of the BOOKS_ TRANSACTIONS table:
Examine the SQL statement:
Which statement is true about the outcome?
- A. It displays details for only members A101and A102 who have borrowed before today with RM as TRANSACTION_TYPE.
- B. It displays details for members who have borrowed before today's date with either RM as TRANSACTION_TYPE or MEMBER_ID as A101 and A102.
- C. It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.
- D. It displays details for members who have borrowed before today with RM as TRANSACTION_TYPE and the details for members A101 or A102.
Answer: C
NEW QUESTION # 17
Examine the description of the CUSTOMERS table:
You need to display last names and credit limits of all customers whose last name starts with A or B In lower or upper case, and whose credit limit is below 1000.
Examine this partial query:
SELECT cust_last_nare, cust_credit_limit FROM customers
Which two WHERE conditions give the required result?
- A. WHERE (UPPER(cust_last_name) LIKE 'A%' OR UPPER(cust_last_name) LIKE 'B%') AND ROUND(cust_credit_limit) < 1000;
- B. WHERE UPPER(cust_last_name) BETWEEN UPPER('A%' AND 'B%') AND
ROUND(cust_credit_limit) < 1000;
- C. WHERE UPPER(cust_last_name) IN ('A%', 'B%') AND cust_credit_limit < 1000:
- D. WHERE (UPPER(cust_last_name) like INITCAP ('A') OR UPPER(cust_last_name) like INITCAP('B')) AND ROUND(cust_credit_limit) < ROUND(1000) ;
- E. WHERE (INITCAP(cust_last_name) LIKE 'A%' OR ITITCAP(cust_last_name) LIKE 'B%') AND cust_credit_limit < 1000
Answer: A,E
Explanation:
The SQL query must find all customers with last names starting with A or B, regardless of case, and a credit limit below 1000:
* B. WHERE (INITCAP(cust_last_name) LIKE 'A%' OR INITCAP(cust_last_name) LIKE 'B%') AND cust_credit_limit < 1000: The INITCAP function initializes the first letter to uppercase for comparison. However, it should be noted that using INITCAP is not necessary when using the LIKE operator with a wildcard % following a single character, because it will not correctly filter all last names that start with an upper or lower case A or B.
* D. WHERE (UPPER(cust_last_name) LIKE 'A%' OR UPPER(cust_last_name) LIKE 'B%') AND cust_credit_limit < 1000: This correctly filters last names beginning with A or B in any case and includes only those with a credit limit below 1000. The UPPER function is used to convert cust_last_name to uppercase before comparison.
References:
* Oracle Database SQL Language Reference 12c, especially sections on string functions and conditions.
NEW QUESTION # 18
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