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    The ____ function partitions a data stream based on a given key or key field
    
    
    
	30. The ____ function partitions a data stream based on a given key or key field.
    
      - Key()
- KeyStream()
- KeyBy()
- KeyField()
Answer: C) KeyBy()
    Explanation:
    The keyBy() function partitions a data stream based on a given key or key field.