UNPARALLELED 1Z0-071 REAL EXAM QUESTIONS–100% MARVELOUS ORACLE DATABASE SQL LEARNING MATERIALS

Unparalleled 1z0-071 Real Exam Questions–100% Marvelous Oracle Database SQL Learning Materials

Unparalleled 1z0-071 Real Exam Questions–100% Marvelous Oracle Database SQL Learning Materials

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Oracle Database SQL Sample Questions (Q154-Q159):

NEW QUESTION # 154
Which three tasks can be performed by DDL statements? (Choose three.)

  • A. preventing data retrieval from a table outside of office hours
  • B. modifying a table to prevent data that violate certain conditions from being entered in a column
  • C. providing an alternative name for a table
  • D. creating multiple savepoints to enable partial rollback of a transaction
  • E. preventing any data modification to a table

Answer: B,C,E


NEW QUESTION # 155
View the Exhibit and examine the structure of the BOOKStable.

The BOOKS table contains details of 100 books.
Examine the commands executed and their outcome:

Which statement is true?

  • A. The first rollback restores the 100 rows that were deleted and the second rollback commits only the changes.
  • B. The first rollback restores the 101 rows that were deleted and the second rollback causes the row was inserted to be deleted and commits the changes.
  • C. Both ROLLBACKcommands restore the 101 rows that were deleted.
  • D. Both ROLLBACKcommands restore the 100 rows that were deleted.

Answer: B


NEW QUESTION # 156
View the exhibit and examine the description of the DEPARTMENTSand EMPLOYEEStables.

You wrote this SQL statement to retrieve EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, for all employees:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

  • A. The DEPARTMENTStable is not used before the EMPLOYEEStable in the FROMclause.
  • B. The table prefix is missing for the column names in the SELECTclause.
  • C. The EMPLOYEESand DEPARTMENTStables have more than one column with the same column name and data type.
  • D. The NATURAL JOINclause is missing the USINGclause.

Answer: C

Explanation:
Natural join needs only one column to be the same in each table. The EMPLOYEESand DEPARTMENTStables have two columns that are the same (Department_ID and Manager_ID)


NEW QUESTION # 157
Examine the description of the EMPLOYEES table:

Which query is valid?

  • A. SELECT dept_id, AVG(NAX(salary)) FROM employees GROUP BY dept_id;
  • B. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
  • C. SELECT dept_id, MAX (AVG(salary)) FROM employees GROUP BY dept_id;
  • D. SELECT dept_id, join date, SUM(salary) FROM employees GROUP BY dept_id,join_date;

Answer: D


NEW QUESTION # 158
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. Enclose the character literal string in the SELECT clause within the double quotation marks.
  • B. Do not enclose the character literal string in the SELECT clause within the single 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


NEW QUESTION # 159
......

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