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Oracle Database SQL Sample Questions (Q392-Q397):

NEW QUESTION # 392
View the exhibit and examine the structure of the EMPLOYEEStable.

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_NAMEof the managers and the second column would have LAST_NAMEof 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.manager_id = 100;
C. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
WHERE m.employee_id = e.manager_id and AND e.manager_id = 100
D. 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;

Answer: B

NEW QUESTION # 393
Examine the description of the PRODUCT_INFORMATION table:

A. SELECT count(nvl( list_price,0)) FROM product_information WHERE list_price is null;
B. SELECT (COUNT(list_price) FROM Product_intormation WHERE list_price=NULL;
C. SELECT COUNT(DISTINCT list_price) FROM product_information WHERE list_price is null.
D. BELECT COUNT(list_price) FROM product_information where list_price is NULL;

Answer: A

NEW QUESTION # 394
Which two join conditions in a from clause are non-equijoins?

A. table1 natural JOIN table2
B. table1 join table2 on (table1.column between table2.column] and table2.column2)
C. tablet join table2 ON (table1.column = table2.column) where table2.column LIKE 'A'
D. table1 join table2 ON (table1.column >= table2.column)
E. table1 join table2 using (column1, column2)

Answer: B,D

NEW QUESTION # 395
View the exhibit and examine the descriptions of the DEPT and LOCATIONS tables.

You want to update the CITY column of the DEPT table for all the rows with the corresponding value in the CITY column of the LOCATIONS table for each department.
Which SQL statement would you execute to accomplish the task?

A. UPDATE dept dSET city = ANY (SELECT cityFROM locations l)
B. UPDATE dept dSET city = (SELECT cityFROM locations l)WHERE d.location_id = l.location_id;
C. UPDATE dept dSET city = ALL (SELECT cityFROM locations lWHERE d.location_id = l.location_id);
D. UPDATE dept dSET city = (SELECT cityFROM locations lWHERE d.location_id = l.location_id);

Answer: D

NEW QUESTION # 396
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database?

A. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
B. The CURRENT_TIMESTAMP function returns data without time zone information
C. A TIMESTAMP data type column contains information about year, month, and day
D. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
E. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row

Answer: A,D,E

Explanation:
A: True. The DBTIMEZONE function returns the database's time zone offset from UTC (Coordinated Universal Time). In Oracle 12c, DBTIMEZONE can return the time zone of the database in terms of a region name or as a numeric offset from UTC. This is stated in the Oracle documentation for managing time zones.
B: True. TIMESTAMP WITH LOCAL TIME ZONE is a data type that adjusts the data stored in the database to the time zone of the session that is querying or inserting the data. When data is stored, Oracle converts it from the session time zone to UTC, and upon retrieval, it converts it back to the session time zone. This is a feature designed to allow the same data to be viewed in different time zones automatically, making it highly useful in global applications.
D: True. SESSIONTIMEZONE function returns the time zone offset of the current session from UTC. This is useful for understanding and managing data conversions in applications that are used across different time zones. The time zone can be displayed as an offset from UTC or as a named region depending on the environment settings.

NEW QUESTION # 397
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