Which two statements are true about trace files produced by the Oracle Database server?
(Choose two.)

Which three statements are true about the Oracle join and ANSI join syntax? (Choose three.)

Examine the description of the SALES1 table:

SALES2 is a table with the same description as SALES1.
Some sales data is duplicated in both tables.
You want to display the rows from the SALES1 table which are not present in the SALES2 table.
Which set operator generates the required output?

The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE.
NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions?
(Choose two.)

Which two can you use to recover a dropped table? (Choose two.)