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Download Oracle Database SQL Exam Dumps
NEW QUESTION 42
Examine the description of the TRANSACTIONS table:
Which two SQL statements execute successfully?
- A. SELECT customer_id CUSTID, transaction_date TRANS_DATE, amount +100 DUES FROM transactions;
- B. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS “DATE”, amount + 100 DUES FROM transactions;
- C. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS DATE, amount + 100 “DUES” FROM transactions;
- D. SELECT customer_id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount + 100
“DUES AMOUNT” FROM transactions; - E. SELECT customer_id AS ‘CUSTOMER-ID’, transaction_date AS DATE, amount + 100 ‘DUES’ FROM transactions;
Answer: A,B
NEW QUESTION 43
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTSand TIMEStables.
The PROD_IDcolumn is the foreign key in the SALEStables, which references the PRODUCTStable.
Similarly, the CUST_IDand TIME_IDcolumns are also foreign keys in the SALEStable referencing the CUSTOMERSand TIMEStables, respectively.
Evaluate the following CREATE TABLEcommand:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true regarding the above command?
- A. The NEW_SALEStable would not get created because the DEFAULTvalue cannot be specified in the column definition.
- B. The NEW_SALEStable would not get created because the column names in the CREATETABLE command and the SELECTclause do not match.
- C. The NEW_SALEStable would get created and all the NOTNULLconstraints defined on the specified columns would be passed to the new table.
- D. The NEW_SALEStable would get created and all the FOREIGNKEYconstraints defined on the specified columns would be passed to the new table.
Answer: C
NEW QUESTION 44
View the Exhibit and examine the structure in the EMPLOYEES tables.
Evaluate the following SQL statement:
SELECT employee_id, department_id
FROM employees
WHERE department_id= 50 ORDER BY department_id
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id= 90
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id= 10;
What would be the outcome of the above SQL statement?
- A. The statement would not execute because the ORDER BY clause should appear only at the end of the SQL statement, that is, in the last SELECT statement.
- B. The statement would execute successfully and display all the rows in the ascending order of DEPARTMENT_ID.
- C. The statement would not execute because the positional notation instead of the column name should be used with the ORDER BY clause.
- D. The statement would execute successfully but it will ignore the ORDER BY clause and display the rows in random order.
Answer: A
NEW QUESTION 45
Evaluate the following SQL statement:
SELECT product_name || ‘it’s not available for order’
FROM product_information
WHERE product_status = ‘obsolete’;
You received the following error while executing the above query:
ERROR
ORA-01756: quoted string not properly terminated
What would you do to execute the query successfully?
- A. Do not enclose the character literal string in the SELECT clause within the single quotation marks.
- B. Enclose the literal character string in the SELECT clause within the double quotation marks.
- C. Use Quote (q) operator and delimiter to allow the use of single quotation mark in the literal character string.
- D. Use escape character to negate the single quotation mark inside the literal character string in the SELECT clause.
Answer: C
Explanation:
References:
http://docs.oracle.com/cd/B19306_01/server.102/b14200/sql_elements003.htm
NEW QUESTION 46
Which three statements are correct regarding indexes? (Choose three.)
- A. For each DML operation performed, the corresponding indexes are automatically updated.
- B. Indexes should be created on columns that are frequently referenced as part of any expression.
- C. When a table is dropped, the corresponding indexes are automatically dropped.
- D. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to creates a unique index.
Answer: A,C,D
Explanation:
Explanation/Reference:
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/
NEW QUESTION 47
……
