PASS GUARANTEED QUIZ ORACLE 1Z1-071 - ORACLE DATABASE SQL PASS-SURE REAL BRAINDUMPS

Pass Guaranteed Quiz Oracle 1z1-071 - Oracle Database SQL Pass-Sure Real Braindumps

Pass Guaranteed Quiz Oracle 1z1-071 - Oracle Database SQL Pass-Sure Real Braindumps

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Oracle Database SQL Sample Questions (Q48-Q53):

NEW QUESTION # 48
Which three are true about subqueries?

  • A. =ANY can only evaluate the argument against a subcjuery if it returns two or more values.
  • B. < any returns true if the argument is less than the lowest value returned by the subquery.
  • C. A subquery cannot be used in the select list.
  • D. A subquery can be used in a WHERE clause.
  • E. A subquery can be used in a HAVING clause.
  • F. <ANY returns true if the argument is less than the highest value returned by the subquery.
  • G. A subquery cannot be used in a FROM clause.

Answer: D,E,F


NEW QUESTION # 49
View the exhibit and examine the structures of the EMPLOYEES and DEPARTMENTS tables.

You want to update EMPLOYEES table as follows:
* Update only those employees who work in Boston or Seattle (locations 2900 and 2700).
* Set department_id for these employees to the department_id corresponding to London (location_id
* 2100).
* Set the employees' salary in location_id 2100 to 1.1 times the average salary of their department.
* Set the employees' commission in location_id 2100 to 1.5 times the average commission of their department.
You issue the following command:

What is outcome?

  • A. It generates an error because multiple columns (SALARY, COMMISSION) cannot be specified together in an UPDATE statement.
  • B. It generates an error because a subquery cannot have a join condition in a UPDATE statement.
  • C. It executes successfully and gives the desired update.
  • D. It executes successfully but does not give the desired update.

Answer: D


NEW QUESTION # 50
Examine these SQL statements that are executed in the given order:

What will be the status of the foreign key EMP_MGR_FK?

  • A. It will be enabled and immediate.
  • B. It will remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
  • C. It will remain disabled and can be re-enabled manually.
  • D. It will be enabled and deferred.

Answer: C


NEW QUESTION # 51
Examine this statement:

Which two statements are true?

  • A. All remaining employee names will appear in an ascending order
  • B. All remaining employee names will appear in ascending order
  • C. All remaining employee names will appear in descending order
  • D. The names of employees maximum salary will appear fist to descending order
  • E. The names of employees remaining the maximum salary will appear first in an ascending order
  • F. The names of employees maximum salary will appear fist to ascending order

Answer: B,D

Explanation:
D). All remaining employee names will appear in descending order F. The names of employees with maximum salary will appear first in descending order Comprehensive and Detailed Explanation WITH all References:
Analyzing the given SQL query:
ORDER BY CASE WHEN salary = (SELECT max(salary) FROM employees) THEN 'A' ELSE last_name END, last_name DESC; Here's what happens in the query:
* The CASE statement checks if the employee's salary is equal to the maximum salary in the table.
* If an employee has the maximum salary, they are assigned a constant value 'A', else their last_name is used for sorting.
* Since 'A' comes before any possible last name value in ascending order, all employees with the maximum salary will be listed first.
* After the CASE expression, the query specifies last_name DESC. This means that within each group sorted by the CASE expression, the names will be sorted in descending order.
Therefore, the employees with the maximum salary will appear first, and within that group, if there is more than one employee with the same maximum salary, they will be sorted in descending order by last name (F).
Then, all remaining employee names will appear in descending order (D).
References:
* Oracle Documentation on CASE Expressions: CASE Expressions
* Oracle Documentation on Sorting Query Results: Sorting Query Results


NEW QUESTION # 52
Examine the description of the BOOKS_TRANSACTIONS table:

Which two WHERE conditions give the same result?

  • A. WHERE borrowed_date = SYSDATE AND transaction_type ='RM' OR member_id IN ('A101','A102');
  • B. WHERE borrowed_date = SYSDATE AND (transaction_type ='RM' OR member_id IN ('A101','A102'));
  • C. WHERE borrowed_date = SYSDATE AND (transaction_type ='RM' AND member_id='A101' OR member_id ='A102'));
  • D. WHERE (borrowed_date = SYSDATE AND transaction_type ='RM') OR member_id IN ('A101','A102');
  • E. WHERE borrowed_date = SYSDATE AND (transaction_type ='RM' AND (member_id ='A101' OR member_id ='A102') );

Answer: B,E

Explanation:
The WHERE clause in SQL filters the rows returned by the SELECT statement. The result of logical operators and conditions can change significantly depending on the use of parentheses.
Options A and E both use parentheses to ensure that borrowed_date = SYSDATE is evaluated with transaction_type ='RM' as one group and the member_id conditions as another group. The parentheses ensure that both conditions within each set of parentheses must be true for the rows to be included.
Option B is incorrect because it does not use parentheses to enforce the grouping of conditions, leading to potentially different results due to the way logical OR works.
Option C is incorrect because it has a syntax error; it is missing a parenthesis.
Option D is incorrect because it will return rows where either borrowed_date = SYSDATE AND transaction_type ='RM' is true or member_id IN ('A101','A102') is true, which is a broader condition than what's specified in options A and E.


NEW QUESTION # 53
......

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