多項選擇題

Which of the following can be used in conjunction with a Flashback Versions Query to filter the results？（）

A. A range of SCN values
B. A list of SCN values
C. A starting and ending timestamp
D. Minimum and maximum sequence values
E. A list of sequence values

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單項選擇題

Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）

A. XID
B. VERSIONS_PK
C. VERSIONS_XID
D. VERSIONS_UNIQUE

單項選擇題

Which of the following statements best describes Flashback Versions Query？（）

A. Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.
B. Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.
C. Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.
D. Flashback Versions Query is used to view all version changes on rows that existed between two points in time.

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Which of the following can be used in conjunction with a Flashback Versions Query to filter the results？（）

你可能感興趣的試題

Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）

Which of the following statements best describes Flashback Versions Query？（）

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Which of the following can be used in conjunction with a Flashback Versions Query to filter the results？（）

Which of the following statements best describes Flashback Versions Query？（）