What does the SCN represent?()  

A .  The system change number, which is a point in time relative to transactions within a given database. B .  A number that represents time. Thus, at 1300 hours, the SCN is the same on all databases.  C .  The security change number, which represents the security code that is needed to access any database structure. D .  A conversion factor that converts internal database time to external clock time. E .  UTC time in the database,providing a standardized way of tracking time in Oracle.

时间:2022-11-04 05:46:11 所属题库:1Z0-053题库

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