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52题、choose one When is the UNDO_RETENTION parameter value ignored by a transaction? A) when Flashback Database is enabled B) when the undo tablespace 阅读全文
posted @ 2019-06-26 15:55
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51题、choose one The HR. DEPARTMENTS table is the parent of the HR. EMPLOYEES table. The EMPLOYEES . DEPARTMENT_ID column has a foreign key constraint w 阅读全文
posted @ 2019-06-26 14:33
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50题、choose two Which two statements are true about the Database Configuration Assistant (DBCA)? A) It can configure Automatic Storage Management (ASM) 阅读全文
posted @ 2019-06-26 14:06
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