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Oracle 1z0-071 the latest exam questions and answers free download

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Oracle 1z0-071 Exam is a multiple-choice test that consists of 73 questions. 1z0-071 exam is divided into six sections, each of which covers a different aspect of SQL, including SQL fundamentals, data retrieval using SELECT statements, single-row functions, and data manipulation using DML statements.

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RealVCE offers Oracle Database SQL (1z0-071) practice exams (desktop & web-based) which are customizable. It means candidates can set time and Oracle 1z0-071 questions of the 1z0-071 practice exam according to their learning needs. The Real 1z0-071 Exam environment of practice test help test takers to get awareness about the test pressure so that they become capable to counter this pressure during the final exam.

Oracle Database SQL Sample Questions (Q289-Q294):

NEW QUESTION # 289
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 eON e.employee_id = m.manager_idWHERE m.manager_id = 100;
B. SELECT m.last_name "Manager", e.last_name "Employee"FROM employees m JOIN employees eWHERE m.employee_id = e.manager_id and AND e.manager_id = 100
C. SELECT m.last_name "Manager", e.last_name "Employee"FROM employees m JOIN employees eON m.employee_id = e.manager_idWHERE m.manager_id = 100;
D. SELECT m.last_name "Manager", e.last_name "Employee"FROM employees m JOIN employees eON m.employee_id = e.manager_idWHERE e.manager_id = 100;

Answer: D

NEW QUESTION # 290
Examine the data in the ORDERS table:

Examine the data in the INVOICES table:

Examine this query:
SELECT order_ id, order_ date FROM orders
INTERSECT
SELECT order_ 1d, order_ date FROM invoices;
Which two rows will it return?

A. 1 <null>
B. 3 01-JAN-2019
C. 2 <null>
D. 3 <null>
E. 4 01-FEB-2019
F. 5 01-MAR-2019

Answer: A,E

NEW QUESTION # 291
Which four statements are true regarding primary and foreign key constraints and the effect they can have on table data?

A. Only the primary key can be defined at the column and table level.
B. It is possible for child rows that have a foreign key to be deleted automatically from the child table at the time the parent row is deleted
C. It is possible for child rows that have a foreign key to remain in the child table at the time the parent row is deleted.
D. Primary key and foreign key constraints can be defined at both the column and table level.
E. The foreign key columns and parent table primary key columns must have the same names.
F. A table can have only one primary key but multiple foreign keys.
G. A table can have only one primary key and one foreign key.

Answer: B,D,F

Explanation:
Primary and foreign key constraints are foundational to relational database design:
* Option A: Incorrect. Both primary and foreign key constraints can be defined at the column or table level.
* Option B: Incorrect. Foreign key columns do not need to have the same names as the corresponding primary key columns in the parent table. They must be of the same data type and size.
* Option C: Incorrect. If a foreign key constraint is enforced without ON DELETE CASCADE, deleting the parent row will either prevent the delete (due to constraint) or require a prior deletion or update of the child rows.
* Option D: Correct. A table can indeed have only one primary key, which uniquely identifies each row, but it can have multiple foreign keys linking to primary keys of different tables.
* Option E: Correct. Both types of keys can be defined at either level, providing flexibility in how constraints are applied and enforced.
* Option F: Incorrect. A table can have multiple foreign keys as stated, each referencing a different parent table.
* Option G: Correct. If the ON DELETE CASCADE option is set for a foreign key, then deleting a parent row will automatically delete the corresponding child rows, maintaining referential integrity.

NEW QUESTION # 292
Examine this statement which executes successfully:
CREATE view emp80 AS
SELECT
FROM employees
WHERE department_ id = 80
WITH CHECK OPTION;
Which statement will violate the CHECK constraint?

A. SELECT
FROM emp80
WHERE department_ id = 90;
B. DELETE FROM emp80
WHERE department_ id = 90;
C. UPDATE emp80
SET department. 1d =80;
WHERE department_ id =90;
D. SELECT
FROM emp80
WHERE department. id = 80;

Answer: C

NEW QUESTION # 293
Examine the structure of the EMPLOYEES table.

You must display the details of employees who have manager with MANAGER_ID 100, who were hired in the past 6 months and who have salaries greater than 10000.
Which query would retrieve the required result?

A. SELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000UNION ALLSELECT last_name, hire_date, salaryFROM employeesWHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100)INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180;
B. SELECT last_name, hire_date, salaryFROM employeesWHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = 100)UNION ALL(SELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000);
C. (SELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000UNION ALLSELECT last_name, hire_date, salaryFROM employeesWHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100))UNIONSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180;
D. SELECT last_name, hire_date, salaryFROM employeesWHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = '100')UNIONSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000;

Answer: D

NEW QUESTION # 294
......

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