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Quiz Oracle - 1z1-071 - The Best Pass Oracle Database SQL Guaranteed

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Oracle Database SQL Sample Questions (Q126-Q131):

NEW QUESTION # 126
Examine the structure of the PROGRAMS table:
Which two SQL statements would execute successfully?

A. SELECT NVL (TO_CHAR (MONTHS_BETWEEN (start-date, end_date)), 'Ongoing') FROM programs
B. SELECT NVL (MONTHS_BETWEEN (start_date, end_date), 'Ongoing') FROM
programs;
C. SELECT TO_DATE (NVL (SYSDATE-END_DATE, SYSDATE)) FROM programs;
D. SELECT NVL (ADD_MONTHS (END_DATE,1) SYSDATE) FROM programs;

Answer: A,D

NEW QUESTION # 127
The PROD_ID column is the foreign key in the SALES table.Which references the PRODUCTS table.
Similarly,the CUST_ID and TIME_ID columns are Also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Evaluate the following CREATE TABLE command:
CREATE TABLE new_sales(prod_id, I cust_id, order_date DEFAULT SYSDATE)
AS SELECT I prod_id,cust_id,time_id FROM sales.
Which statement is true regarding the above command?

A. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.
B. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause I do not match.
C. The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.
D. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table

Answer: C

NEW QUESTION # 128
Examine the description of the EMPLOYEES table:

The session time zone is the same as the database server
Which two statements will list only the employees who have been working with the company for more than five years?

A. SELECT employee_ name FROM employees WHERE (SYSTIMESTAMP - hire_ data) / 365>
B. SELECT employee_ name FROM employees WHERE (SYSNAYW - hire_ data / 12> 3
C. SELECT employee_ name FROM employees WHERE (CUNACV_ DATE - hire_ data / 12> 3
D. SELECT employee_ name FROM employees WHERE (SYSDATE - hire_ data) / 365>5
E. SELECT employee_ name FROM employees WHERE (SYSNAYW - hire_ data / 12> 3
F. SELECT employee_ name FROM employees WHERE (CUARENT_ DATE - hire_ data / 365>5

Answer: D,F

NEW QUESTION # 129
Examine the description of the CUSTOMERS table:

Which three statements will do an implicit conversion?

A. SELECT FROM customers WHERE insert date = '01-JAN-19';
B. SELECT * FROM customers WHERE customer_ id = 0001;
C. SELECT. FROM customers WHERE insert_ date = DATE *2019-01-01';
D. SELECT * FROM customers WHERE TO_ CHAR (customer_ id) = '0001';
E. SELECT. FRON customers WE TO DATE (Insert _ date) = DATE '2019-01-01';
F. SELECT * FROM customers WHERE customer id = '0001';

Answer: A,C,F

Explanation:
A: No implicit conversion is done here because TO_CHAR is an explicit conversion from a numeric to a string data type.
B: Implicit conversion happens here because the '0001' string will be automatically converted to a numeric data type to match the CUSTOMER_ID field.
C: No implicit conversion is needed because 0001 is already a numeric literal.
D: Implicit conversion occurs here because the string '01-JAN-19' will be converted to a date type to compare with INSERT_DATE.
E: No implicit conversion; DATE is explicitly specified using the DATE keyword.
F: Incorrect syntax, it has typographical errors and also TO_DATE is an explicit function, not an implicit conversion.
Reference for SQL functions, conversions, and the CROSS JOIN behavior can be found in the Oracle Database SQL Language Reference 12c documentation.

NEW QUESTION # 130
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,
enameVARCHAR2(15),
salary NUMBER(8,2),
mgr_no NUMBER(2) CONSTRAINT emp_mgr_fk REFERENCES emp);
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_FK?

A. It would be automatically enabled and deferred.
B. It would be automatically enabled and immediate.
C. It would remain disabled and has to be enabled manually using the ALTER TABLE command.
D. It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.

Answer: A,B,D

NEW QUESTION # 131
......

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