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Oracle 1z0-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1z0-071
Exam Price:	$245 USD
Exam Duration:	120 minutes
Certificate Validity Period:	No expiration for this exam/certification
Real Exam Qty:	70
Available Languages:	Korean, Japanese, Portuguese, English, Simplified Chinese
Exam Format:	Multiple Choice
Related Certifications:	Oracle Database Administrator Certified Associate (DBA) Oracle Database SQL Certified Associate
Passing Score:	63%
Sample Questions:	Oracle 1z0-071 Sample Questions
Exam Way:	Pearson VUE testing center (online proctored option available)
Pre Condition:	No formal prerequisites required, but basic knowledge of relational database concepts is recommended
Official Syllabus URL:	https://education.oracle.com/oracle-database-sql-exam

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Oracle 1z1-071 certification exam, also known as the Oracle Database SQL exam, is designed to test individuals' knowledge and skills in SQL programming, data modeling, and database management. Oracle Database SQL certification is intended for individuals who want to demonstrate their proficiency in working with Oracle databases and SQL programming. 1z0-071 Exam is recognized worldwide as a benchmark for Oracle SQL expertise and is highly valued by employers.

Oracle Database SQL Sample Questions (Q139-Q144):

NEW QUESTION # 139
View the Exhibit and examine the data in ORDERS and ORDER_ITEMS tables.
You need to create a view that displays the ORDER ID, ORDER_DATE, and the total number of items in each order.

Which CREATE VIEW statement would create the view successfully?

A. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id) FROM orders o JOIN order_items i ON (o.order_id = i.order_id) GROUP BY o.order_id,o.order_date;
B. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id) "NO OF ITEMS" FROM orders o JOIN order_items i ON (o.order_id = i.order_id) GROUP BY o.order_id,o.order_date;
C. CREATE OR REPLACE VIEW ord_vu (order_id,order_date) AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id) "NO OF ITEMS" FROM orders o JOIN order_items i ON (o.order_id = i.order_id) GROUP BY o.order_id,o.order_date;
D. CREATE OR REPLACE VIEW ord_vu
AS SELECT o.order_id, o.order_date, COUNT(i.line_item_id)ll' NO OF ITEMS' FROM orders o JOIN order_items i ON (o.order_id = i.order_id) GROUP BY o.order_id,o.order_date WITH CHECK OPTION;

Answer: B

NEW QUESTION # 140
Examine the data in the COLORS table:

Examine the data in the BRICKS table:

Which two queries return all the rows from COLORS?

Answer: A,E

NEW QUESTION # 141
Which two statements are true about the SET VERIFY ON command? (Choose two.)

A. It displays values for variables created by the DEFINE command
B. It can be used in SQL Developer and SQL*Plus
C. It displays values for variables prefixed with &&
D. It can be used only in SQL*Plus
E. It displays values for variables used only in the WHERE clause of a query

Answer: A,B

Explanation:
https://blogs.oracle.com/opal/sqlplus-101-substitution-variables#4_1_8

NEW QUESTION # 142
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEES_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:
UPDATE employees
SET (job_id, salary) =
(SELECT job_id, salary
FROM employees
WHERE employee_id = 200)
WHERE employee id=100;
Which two statements are true?

A. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
B. Employee 200 will have SALARY set to the same value as the SALARY of employee 100.
C. Employees 100 and 200 will have the same SALARY as before the update command.
D. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200.
E. Employee 100 will have SALARY set to the same value as the SALARY of employee 200.
F. Employees 100 and 200 will have the same JOB ID as before the update command.

Answer: D,E

NEW QUESTION # 143
Examine this SQL statement:
DELETE FROM employees e
WHERE EXISTS
(SELECT'dummy'
FROM emp_history
WHERE employee_id = e.employee_id)
Which two are true?

A. All existing rows in the EMPLOYEE table are deleted.
B. The DELETE statement executes successfully even if the subquery selects multiple rows.
C. The subquery is executed for every row in the EMPLOYEES table.
D. The subquery is executed before the DELETE statement is executed.
E. The subquery is not a correlated subquery.

Answer: B,C

Explanation:
The provided DELETE statement uses a correlated subquery to determine which rows should be deleted from the EMPLOYEES table.
A . The subquery is indeed executed for every row in the EMPLOYEES table. This is because it references e.employee_id, which is a column from the outer query, making it a correlated subquery.
B . The subquery is a correlated subquery, as explained above.
C . The subquery is executed for each row, not before the DELETE statement.
D . Not all existing rows in the EMPLOYEES table are deleted, only those that have a corresponding employee_id in the EMP_HISTORY table.
E . The DELETE statement executes successfully even if the subquery selects multiple rows because the EXISTS condition only checks for the presence of rows, not their count.
Reference:
Oracle Database SQL Language Reference 12c Release 1 (12.1), DELETE Statement Oracle Database SQL Language Reference 12c Release 1 (12.1), Subquery Factoring Oracle Database SQL Language Reference 12c Release 1 (12.1), Correlated Subqueries

NEW QUESTION # 144
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