686. You execute the following FLASHBACK TABLE command:
Oracle Flashback Table
Oracle Flashback Table enables you to restore a table to its state as of a previous point in time. It provides a fast, online solution for recovering a table that has been accidentally modified or deleted by a user or application. In many cases, Oracle Flashback Table eliminates the need for you to perform more complicated point-in-time recovery operations.
Oracle Flashback Table:
Restores all data in a specified table to a previous point in time described by a timestamp or SCN.
Performs the restore operation online.
Automatically maintains all of the table attributes, such as indexes, triggers, and constraints that are necessary for an application to function with the flashed-back table.
Maintains any remote state in a distributed environment. For example, all of the table modifications required by replication if a replicated table is flashed back.
Maintains data integrity as specified by constraints. Tables are flashed back provided none of the table constraints are violated. D正确
This includes any referential integrity constraints specified between a table included in the FLASHBACK TABLE statement and another table that is not included in theFLASHBACK TABLE statement.
Even after a flashback operation, the data in the original table is not lost. You can later revert to the original state.
参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmflash.htm#BRADV81517