ORACLE 1Z0-071 LATEST EXAM ANSWERS & PASS4SURE 1Z0-071 EXAM PREP

Oracle 1z0-071 Latest Exam Answers & Pass4sure 1z0-071 Exam Prep

Oracle 1z0-071 Latest Exam Answers & Pass4sure 1z0-071 Exam Prep

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Oracle Database SQL Sample Questions (Q223-Q228):

NEW QUESTION # 223
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. (Choose two.)

Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?

  • A. The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.
  • B. The FIRST_NAME column would be dropped provided at least one column remains in the table.
  • C. The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.
  • D. The FIRST_NAME column would be dropped provided it does not contain any data.

Answer: B


NEW QUESTION # 224
Which two will execute successfully?

  • A. SELECT NVL('DATE',200) FROM (SELECT NULL AS "DATE" FROM DUAL);
  • B. SELECT NVL('DATE',SYSDATE) FROM DUAL;
  • C. SELECT COALESCR('DATE', SYSDATE) FROM DUAL;
  • D. SELECT COALESCE(O,SYSDATE) TRCH DUAL;
  • E. SELECT COALESCE('DATE',SYSDATE) FROM (SELECT NULL AS "DATE" FROM DUAL) ;

Answer: A,B


NEW QUESTION # 225
Examine these statements which execute successfully:
ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24 MI: SS'
ALTER SESSION SET TIME_ ZONE = '-5:00';
SELECT DBTIMEZONE, SYSDATE FROM DUAL
Examine the result:

If LOCALTIMESTAMP was selected at the same time what would it return?

  • A. 11-JUL-2019 11,00,00,000000AM -05:00
  • B. 11-JUL-2019 11,00,00,00000000 AM
  • C. 11-JUL-2019 6,00,00,000000 AM
  • D. 11-JUL-2019 6,00,00,00000000 AM - 05:00

Answer: D

Explanation:
The LOCALTIMESTAMP function in Oracle Database returns the current date and time in the session time zone. Given that the session time zone was set to -5:00 with the ALTER SESSION SET TIME_ZONE command, LOCALTIMESTAMP will return the date and time adjusted to this session time zone.
The SYSDATE function, on the other hand, returns the current date and time from the operating system of the database server, which is not affected by the session time zone setting. In the result shown, SYSDATE returns 11-JUL-2019 11:00:00, which reflects the system time zone, not the session time zone.
The time difference between the DBTIMEZONE (+00:00) and the session time zone (-5:00) is 5 hours. Since SYSDATE shows the time as 11:00:00 in the system time zone, the LOCALTIMESTAMP adjusted to the session time zone would show the time as 06:00:00.
The correct answer is A: 11-JUL-2019 6:00:00.00000000 AM - 05:00. This represents the local timestamp in the session time zone, which is 5 hours behind the DBTIMEZONE.
Please note that the exact format returned by LOCALTIMESTAMP includes the fractional seconds up to 9 decimal places, and the time zone offset is specified as part of the timestamp.


NEW QUESTION # 226
View the Exhibit and examine the data in the employees table.
You want to generate a report showing the total compensation paid to each employee to date.
You issue the following query:
What is the outcome?

  • A. It generates an error because the usage of the round function in the expression is not valid
  • B. It executes successfully but does not give the correct output.
  • C. It generates an error because the alias is not valid.
  • D. It generates an error because the concatenation operator can be used to combine only two items.
  • E. It executes successfully and gives the correct output.

Answer: B


NEW QUESTION # 227
View the exhibit and examine the structure and data in the invoice table. (Choose two.)

Which two SQL statements would execute successfully?

  • A. SELECT MAX(AVG(SYSDATE -inv_date)) FROM invoice
  • B. SELECT AVG(inv_date) FROM invoice
  • C. SELECT MAX(inv_date), MIN(cust_id) FROM invoice
  • D. SELECT AVG( inv_date -SYSDATE), AVG(inv_amt) FROM invoice

Answer: C,D


NEW QUESTION # 228
......

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