單項選擇題

If an application issues the same query more than once in the same Unit of Work, which isolation level will not permit this application to see additional rows inserted by other applications?（）

A.Read Stability (RS)
B.Repeatable Read (RR)
C.Uncommitted Read (UR)
D.Cursor Stability (CS)

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Which of the following best describes how locks are used in DB2?（）

A.To maintain control of updated rows for commit processing
B.To ensure only committed changes are altered by another application
C.To allow two applications to update the same row of data simultaneously
D.To prevent multiple applications from accessing the same data simultaneously

單項選擇題

Which of the following resources can be explicitly locked?（）

A.Row
B.Page
C.Table
D.Column