You create a table with the PERIOD FOR clause to enable the use of the Temporal Validity feature of Oracle Database 12c.
Examine the table definition:
Which three statements are true concerning the use of the Valid Time Temporal feature for the EMPLOYEES table?
When creating a table with the PERIOD FOR clause to enable Temporal Validity, columns for start and end times (such as employee_time_start and employee_time_end) are automatically created to store temporal data. However, these columns are not populated automatically by the Oracle Server; instead, the application or user must supply the values. Furthermore, enabling valid time flashback at the session level with procedures such as DBMS_FLASHBACK_ARCHIVE.ENABLE_AT_VALID_TIME sets the visibility for data manipulation language (DML) operations with respect to valid temporal data.
The answer E it's truncated, but also the answer C is correct