When to use a copy stage in the job
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Replicating data set
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Change the data type
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Renaming the Field name
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A and C
D
Correct answer
Explanation
The Copy stage in DataStage is primarily used for replicating data to multiple output links (replication) and for renaming columns without changing the data itself. While it can change data types, that's not one of its main use cases. The combination of replicating and renaming are the two key functions.