单选题You have created an Oracle 10g database named SALES， which will be used by an application named SalesOrders. Users of the SalesOrders application complain that application response time is slow when they generate reports. The SalesOrders application accesses a table that contains 10 million rows. You decide to create an index on this table using the NOLOGGING option so that the index creation process is completed in the least amount of time. Which of the following is NOT true about an index created with the NOLOGGING option？（）A The index can be changed from NOLOGGING to LOGGINGB The index cannot be recovered even in the ARCHIVELOG mode.C The index can only be created if the base table is created with the NOLOGGING option.D The index can be recovered if you perform a backup after the CREATE INDEX statement.
单选题
You have created an Oracle 10g database named SALES， which will be used by an application named SalesOrders. Users of the SalesOrders application complain that application response time is slow when they generate reports. The SalesOrders application accesses a table that contains 10 million rows. You decide to create an index on this table using the NOLOGGING option so that the index creation process is completed in the least amount of time. Which of the following is NOT true about an index created with the NOLOGGING option？（）
A
The index can be changed from NOLOGGING to LOGGING
B
The index cannot be recovered even in the ARCHIVELOG mode.
C
The index can only be created if the base table is created with the NOLOGGING option.
D
The index can be recovered if you perform a backup after the CREATE INDEX statement.
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