Databricks Certified Data Engineer - Professional
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Which method correctly performs streaming deduplication?
A
De-duplicate records within each batch, rank the result, and then insert only records having rank = 1 into the target table
B
De-duplicate records in all batches with watermarking, and then overwrite the target table by the result
C
De-duplicate records within each batch, and then append the result into the target table
D
De-duplicate records within each batch, and then merge the result into the target table using insert-only merge
E
None of the above approaches allows to correctly perform streaming deduplication