单项选择题
A. XID
B. VERSIONS_PK
C. VERSIONS_XID
D. VERSIONS_UNIQUE
单项选择题 WhichofthefollowingstatementsbestdescribesFlashbackVersionsQuery?()
多项选择题 Users notify you that their application is failing every time they try to add new records. Because of poor application design, the actual ORA error message is unavailable. What might be the problem?()
多项选择题 InordertoperformFlashbackTransactionQueryoperations,whichofthesestepsarerequired?()