【单选题】You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system c...
A.
Restore the backup control file and open the database with RESETLOGS option.
B.
Perform point-in-time recovery because flashback cannot be performed again on this table
C.
Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571
D.
Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571
【单选题】这一组例子体现出兰盖克“意象”概念的哪一个? The clock is on the table. The clock is lying on the table。 The clock is resting on the table. The table is supporting the clock.