Download Oracle Datbase 12c SQL.PracticeTest.1z0-071.2019-02-22.1e.115q.vcex

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Exam Oracle Datbase 12c SQL
Number 1z0-071
File Name Oracle Datbase 12c SQL.PracticeTest.1z0-071.2019-02-22.1e.115q.vcex
Size 11.02 Mb
Posted February 22, 2019
Downloads 17



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Demo Questions

Question 1
Which statement is true regarding external tables?

  • A: The CREATE TABLE AS SELECT statement can be used to upload data into a normal table in the database from an external table.
  • B: The data and metadata for an external table are stored outside the database.
  • C: The default REJECT LIMIT for external tables is UNLIMITED.
  • D: ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.



Question 2
Which two statements are true about Data Manipulation Language (DML) statements?

  • A: An INSERT INTO...VALUES.. statement can add multiple rows per execution to a table.
  • B: An UPDATE... SET... statement can modify multiple rows based on multiple conditions on a table.
  • C: A DELETE FROM..... statement can remove rows based on only a single condition on a table.
  • D: An INSERT INTO... VALUES..... statement can add a single row based on multiple conditions on a table.
  • E: A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
  • F: An UPDATE....SET.... statement can modify multiple rows based on only a single condition on a table.



Question 3
Which two statements are true regarding roles? (Choose two.)

  • A: A role can be granted to itself.
  • B: A role can be granted to PUBLIC.
  • C: A user can be granted only one role at any point of time.
  • D: The REVOKE command can be used to remove privileges but not roles from other users.
  • E: Roles are named groups of related privileges that can be granted to users or other roles.



Question 4
Evaluate the following statement. 

  

Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

  • A: They are evaluated by all the three WHEN clauses regardless of the results of the evaluation of any other WHEN clause.
  • B: They are evaluated by the first WHEN clause. If the condition is true, then the row would be evaluated by the subsequent WHEN clauses.
  • C: They are evaluated by the first WHEN clause. If the condition is false, then the row would be evaluated by the subsequent WHEN clauses.
  • D: The insert statement would give an error because the ELSE clause is not present for support in case none of WHEN clauses are true.



Question 5
Examine the structure of the MEMBERS table:


You execute the SQL statement:
SQL > SELECT member_id, ' ' , first_name, ' ' , last_name "ID FIRSTNAME LASTNAME " FROM members; 
What is the outcome?

  • A: It fails because the alias name specified after the column names is invalid.
  • B: It fails because the space specified in single quotation marks after the first two column names is invalid.
  • C: It executes successfully and displays the column details in a single column with only the alias column heading.
  • D: It executes successfully and displays the column details in three separate columns and replaces only the last column heading with the alias.



Question 6
You issue the following command to drop the PRODUCTS table:
SQL > DROP TABLE products; 

Which three statements are true about the implication of this command? (Choose three.)

  • A: All data along with the table structure is deleted.
  • B: A pending transaction in the session is committed.
  • C: All indexes on the table remain but they are invalidated.
  • D: All views and synonyms on the table remain but they are invalidated.
  • E: All data in the table is deleted but the table structure remains.



Question 7
You execute the following commands:
SQL > DEFINE hiredate = '01-APR-2011' 
SQL >SELECT employee_id, first_name, salary 
    FROM employees 
    WHERE hire_date > '&hiredate' 
    AND manager_id > &mgr_id; 

For which substitution variables are you prompted for the input?

  • A: none, because no input required
  • B: both the substitution variables ''hiredate' and 'mgr_id'.
  • C: only hiredate'
  • D: only 'mgr_id'



Question 8
Evaluate the following two queries:

  

Which statement is true regarding the above two queries?

  • A: Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.
  • B: There would be no change in performance.
  • C: Performance would degrade in query 2.
  • D: Performance would improve in query 2.



Question 9
View the exhibit and examine the structure of the EMPLOYEES table. 

  

You want to display all employees and their managers having 100 as the MANAGER_ID. You want the output in two columns: the first column would have the LAST_NAME of the managers and the second column would have LAST_NAME of the employees.
Which SQL statement would you execute? 

  • A: SELECT m.last_name "Manager", e.last_name "Employee"
    FROM employees m JOIN employees e
    ON m.employee_id = e.manager_id
    WHERE m.manager_id = 100;
  • B: SELECT m.last_name "Manager", e.last_name "Employee"
    FROM employees m JOIN employees e
    ON m.employee_id = e.manager_id
    WHERE e.manager_id = 100;
  • C: SELECT m.last_name "Manager", e.last_name "Employee"
    FROM employees m JOIN employees e
    ON e.employee_id = m.manager_id
    WHERE m.manager_id = 100;
  • D: SELECT m.last_name "Manager", e.last_name "Employee"
    FROM employees m JOIN employees e
    WHERE m.employee_id = e.manager_id AND e.manager_id = 100



Question 10
Examine the structure of the EMPLOYEES table. 

  

There is a parent/child relationship between EMPLOYEE_ID and MANAGER_ID. 
You want to display the last names and manager IDs of employees who work for the same manager as the employee whose EMPLOYEE_ID is 123. 
Which query provides the correct output? 

  • A: SELECT e.last_name, m.manager_id
    FROM employees e RIGHT OUTER JOIN employees m
    on (e.manager_id = m.employee_id)
    AND e.employee_id = 123;
  • B: SELECT e.last_name, m.manager_id
    FROM employees e LEFT OUTER JOIN employees m
    on (e.employee_id = m.manager_id)
    WHERE e.employee_id = 123;
  • C: SELECT e.last_name, e.manager_id
    FROM employees e RIGHT OUTER JOIN employees m
    on (e.employee_id = m.employee_id)
    WHERE e.employee_id = 123;
  • D: SELECT m.last_name, e.manager_id
    FROM employees e LEFT OUTER JOIN employees m
    on (e.manager_id = m.manager_id)
    WHERE e.employee_id = 123;









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