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Question 1:

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

A. CREATE TABLE employees(employee_id NUMBER,Login_id NUMBER,Employee_name VARCHAR2(100),Hire_date DATE,CONSTRAINT emp_id_ukUNIQUE (employee_id, login_id));

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

C. CREATE TABLE employees(employee_id NUMBER CONSTRAINT emp_id_pk PRIMARY KEY, Login_id NUMBER UNIQUE, Employee_name VARCHAR2(25),Hire_date DATE);

D. CREATE TABLE employees(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));

E. CREATE TABLE employees(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_id_ukUNIQUE (employee_id, login_id));

Correct Answer: BE


Question 2:

Which task can be performed by using a single Data Manipulation Language (DML) statement?

A. Removing all data only from a single column on which a primary key constraint is defined.

B. Removing all data from a single column on which a unique constraint is defined.

C. Adding a column with a default value while inserting a row into a table.

D. Adding a column constraint while inserting a row into a table.

Correct Answer: A


Question 3:

View the Exhibit and examine the structure of the EMPLOYEES and JOB_HISTORY tables. (Choose all that apply.)

Examine this query which must select the employee IDs of all the employees who have held the job SA_MAN at any time during their employment.

SELECT EMPLOYEE_ID

FROM EMPLOYEES

WHERE JOB_ID = \’SA_MAN\’

SELECT EMPLOYEE_ID

FROM JOB_HISTORY

WHERE JOB_ID = \’SA_MAN\’;

Choose two correct SET operators which would cause the query to return the desired result.

A. UNION

B. MINUS

C. INTERSECT

D. UNION ALL

Correct Answer: AD


Question 4:

Evaluate the following query:

SQL> SELECT TRUNC (ROUND (156.00, -1),-1)

FROM DUAL;

What would be the outcome?

A. 150

B. 200

C. 160

D. 16

E. 100

Correct Answer: C

https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions135.htm https://docs.oracle.com/cd/B28359_01/olap.111/b28126/dml_functions_2127.htm


Question 5:

Which three arithmetic operations can be performed on a column by using a SQL function that is built into Oracle database? (Choose three.)

A. Finding the lowest value

B. Finding the quotient

C. Raising to a power

D. Subtraction

E. Addition

Correct Answer: ACE


1Z0-071 PDF Dumps1Z0-071 Exam Questions1Z0-071 Braindumps

Question 6:

Which two statements are true regarding working with dates? (Choose two.)

A. The RR date format automatically calculates the century from the SYSDATE function but allows the session user to enter the century.

B. The RR date format automatically calculates the century from the SYSDATE function and does not allow a session user to enter the century.

C. The default internal storage of dates is in character format.

D. The default internal storage of dates is in numeric format.

Correct Answer: AD


Question 7:

Which two statements are true regarding the COUNT function?

A. A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE clause.

B. COUNT (DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and NULL values in the INV_AMT column.

C. COUNT (cust_id) returns the number of rows including rows with duplicate customer IDs and NULL value in the CUST_ID column.

D. COUNT (*) returns the number of rows including duplicate rows and rows containing NULL value in any of the columns.

E. The COUNT function can be used only for CHAR, VARCHAR2, and NUMBER data types.

Correct Answer: BD


Question 8:

Evaluate the following SQL statements that are issued in the given order:

CREATE TABLE emp

(emp_no NUMBER(2) CONSTRAINT emp_emp_no_pk PRIMARY KEY,

ename VARCHAR2(15),

salary NUMBER (8,2),

mgr_no NUMBER(2) CONSTRAINT emp_mgr_fk REFERENCES emp(emp_no));

ALTER TABLE emp

DISABLE CONSTRAINT emp_emp_no_pk CASCADE;

ALTER TABLE emp

ENABLE CONSTRAINT emp_emp_no_pk;

What would be the status of the foreign key EMP_MGR_PK?

A. It would remain disabled and can be enabled only by dropping the foreign key constraint and recreating it.

B. It would remain disabled and has to be enabled manually using the ALTER TABLE command.

C. It would be automatically enabled and immediate.

D. It would be automatically enabled and deferred.

Correct Answer: B


Question 9:

Which statement is true regarding the default behaviour of the ORDER by clause?

A. Numeric values are displayed in descending order if they have decimal positions.

B. Only columns that are specified in the SELECT list can be used in the ORDER by clause.

C. In a character sort, the values are case-sensitive.

D. NULLs are not including in the sort operation

Correct Answer: C


Question 10:

View the exhibit and examine the description of the PRODUCT_INFORMATION table.

Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?

A. SELECT COUNT (DISTINCT list_price)FROM product_informationWHERE list_price is NULL

B. SELECT COUNT (NVL(list_price, 0))FROM product_informationWHERE list_price is NULL

C. SELECT COUNT (list_price)FROM product_informationWHERE list_price i= NULL

D. SELECT COUNT (list_price)FROM product_informationWHERE list_price is NULL

Correct Answer: B


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