1Z0-071 TEST CERTIFICATION COST, EXAM DUMPS 1Z0-071 ZIP

1z0-071 Test Certification Cost, Exam Dumps 1z0-071 Zip

1z0-071 Test Certification Cost, Exam Dumps 1z0-071 Zip

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How to book ORACLE 1z0-071 Certification Exam

Registering is usually done up to 2 weeks before the exam date. You can register for the exam by following these steps:

  • Fees for registration are based on the country you live in and the type of exam you are registering for
  • Log in to My OracleCareer with your username and password
  • Exams are offered as a walk-in or as scheduled appointments at Pearson Vue locations throughout the world
  • Minimum age requirement for the exam 1z0-071 is 18 years old
  • Click on “register” next to the Oracle Certification Exam you would like to take, followed by completion of a short form including your name, email address, and contact phone number
  • Click on exams from the drop-down menu under My OracleCareer Menu.
  • You will receive a confirmation email on your email address on the same day that you register

View your VUE registration history online to see your past exams registered and to manage future exams/registrations if necessary. If you need to register for or cancel a future appointment, please log in or sign up and take advantage of the convenient management tools offered. If you think that you are not ready yet, you can add it to your cart.

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Oracle Database SQL Sample Questions (Q133-Q138):

NEW QUESTION # 133
Examine the commands used to create department details and course details:

You want to generate a list of all department IDs that do not exist in the COURSE_DETAILS table. You execute the SQL statement:

What is the outcome?

  • A. It executes successfully but displays an incorrect list.
  • B. It executes successfully and displays the required list.
  • C. It fails because the ON clause condition is not valid
  • D. it fails because the Join type used is Incorrect

Answer: D


NEW QUESTION # 134
Which two statements are true regarding the EXISTS operator used in the correlated subqueries? (Choose two.)

  • A. It is used to test whether the values retrieved by the outer query exist in the result set of the inner query.
  • B. The outer query continues evaluating the result set of the inner query until all the values in the result set are processed.
  • C. It is used to test whether the values retrieved by the inner query exist in the result of the outer query.
  • D. The outer query stops evaluating the result set of the inner query when the first value is found.

Answer: A,D

Explanation:
Explanation
http://www.techonthenet.com/oracle/exists.php


NEW QUESTION # 135
What is true about non-equijoin statement performance?

  • A. The join syntax used makes no difference to performance.
  • B. The between condition always performs better than using the >= and <= conditions.
  • C. The Oracle join syntax performs better than the SQL: 1999 compliant ANSI join syntax.
  • D. The between condition always performs less well than using the >= and <= conditions.
  • E. Table aliases can improve performance.

Answer: A

Explanation:
When comparing the performance of different SQL join types and conditions, Oracle SQL optimizations generally ensure that performance is consistent across different syntactical forms of expressing the same logic:
* Option A: False. The BETWEEN condition does not inherently perform worse than using >= and <=.
Oracle's optimizer typically evaluates these conditions similarly, optimizing the underlying execution based on the data distribution and available indexes.
* Option B: False. Oracle's optimizer is designed to handle both Oracle-specific join syntax and ANSI join syntax with equal competence. Performance differences would typically be negligible because the optimizer translates both into an optimal execution plan based on the same underlying mechanisms.
* Option C: True. The join syntax used (whether Oracle's traditional syntax or ANSI standard syntax) generally does not affect the performance. Oracle's query optimizer is adept at translating different syntaxes into efficient execution plans.
* Option D: False. The assertion that BETWEEN always performs better than >= and <= is incorrect.
Performance depends more on factors like indexing, the specific data and distribution, and the Oracle optimizer's capabilities than on the mere choice of syntax.
* Option E: False. While table aliases help improve query readability and can prevent ambiguity in SQL queries, they do not inherently improve performance. Their use is a best practice for code clarity and
* maintenance, not performance enhancement.


NEW QUESTION # 136
Examine this query:
SELECT employee_id, first_name, salary
FROM employees
WHERE hiredate > 61*
Which two methods should yours to prevent prompting for hire date value when this queries executed?

  • A. Execute the SET VERIFY OFF command before executing the query.
  • B. Store the query in a script and pass the substitution value to the script when executing it.
  • C. Use the UNDEFINE command before executing the query.
  • D. Replace 's1' with &1'in the query:
  • E. Execute the SET VERIFY ON command before executing the query.
  • F. Use the DEFINE command before executing the query

Answer: B,F


NEW QUESTION # 137
View the Exhibit and examine the description for the PRODUCTS and SALEStable.

PROD_IDis a primary key in the PRODUCTStable and foreign key in the SALEStable with ON DELETE CASCADEoption. The SALEStable contains data for the last three years. You want to remove all the rows from the PRODUCTStable for which no sale was done for the last three years.
Which is the valid DELETEstatement?
DELETE

  • A. FROM products
    WHERE prod_id IN (SELECT prod_id
    FROM sales
    WHERE time_id >= SYSDATE - 3*365 );
  • B. FROM products
    WHERE prod_id = (SELECT prod_id
    FROM sales
    WHERE time_id - 3*365 = SYSDATE );
    DELETE
  • C. FROM products
    WHERE prod_id = (SELECT prod_id
    FROM sales
    WHERE SYSDATE >= time_id - 3*365 );
    DELETE
  • D. FROM products
    WHERE prod_id IN (SELECT prod_id
    FROM sales
    WHERE SYSDATE - 3*365 >= time_id);
    DELETE

Answer: D


NEW QUESTION # 138
......

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