Free Access Oracle.1z0-071.v2025-03-22.q314 Practice Test (Page 9)

Question 36

Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS tables:

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

What is the outcome?

A.It fails because the join type used is incorrect.

B.It executes successfully and displays the required list.

C.It executes successfully but displays an incorrect list.

D.It fails because the ON clause condition is not valid.

Question 37

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 e.employee_id = m.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.managerjd=100;

C.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;

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.managerjd=100;

Question 38

Which three statements are true regarding subqueries? (Choose three.)

A.Multiple columns or expressions can be compared between the main query and subquery.

B.Subqueries can contain ORDER BY but not the GROUP BY clause.

C.Main query and subquery can get data from different tables.

D.Subqueries can contain GROUP BY and ORDER BY clauses.

E.Main query and subquery must get data from the same tables.

F.Only one column or expression can be compared between the main query and subquery.

Question 39

You must create a table EMPLOYEES in which the values in the columns EMPLOYEES_ID and LOGIN_ID must be unique and not null.
Which two SQL statements would create the required table? (Choose two.) CREATE TABLE employees

A.(employee_id NUMBER,
login_id NUMBER,
employee_name VARCHAR2(100),
hire_date DATE,
CONSTRAINT emp_id_uk UNIQUE (employee_id, login_id);
CONSTRAINT emp_id_nn NOT NULL (employee_id, login_id));
CREATE TABLE employees

B.(employee_id NUMBER CONSTRAINT emp_id_pk PRIMARY KEY,
login_id NUMBER UNIQUE,
employee_name VARCHAR2(25),
hire_date DATE);
CREATE TABLE employees

C.(employee_id NUMBER,
login_id NUMBER,
employee_name VARCHAR2(100),
hire_date DATE,
CONSTRAINT emp_id_uk UNIQUE (employee_id, login_id));
CREATE TABLE employees

D.(employee_id NUMBER CONSTRAINT emp_id_nn NOT NULL,
login_id NUMBER CONSTRAINT login_id_nn NOT NULL,
employee_name VARCHAR2(100),
hire_date DATE,
CONSTRAINT emp_num_id_uk UNIQUE (employee_id, login_id));

E.(employee_id NUMBER,
login_id NUMBER,
employee_name VARCHAR2(25),
hire_date DATE,
CONSTRAINT emp_id_pk PRIMARY KEY (employee_id, login_id));
CREATE TABLE employees

Question 40

The STORES table has a column START_DATE of data type DATE, containing the datethe row was inserted.
You only want to display details of rows where START_DATEis within the last 25 months.which WHERE clause can be used?

A.WHERE TO_NUMBER(start_date - SYSDATE)<=25

B.WHERE ADD_MONTHS (start date , 25)<= SYSDATE

C.WHERE MONTHS_BETWEEN(SYSDATE, start_date)<=25

D.WHERE MONTHS_BETWEEN (start_date, SYSDATE)<=25

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