stream
Parameters
value
When an item in the table is modified, StreamViewType determines what information is written to the stream for this table. Valid values for StreamViewType are:
KEYS_ONLY- Only the key attributes of the modified item are written to the stream.NEW_IMAGE- The entire item, as it appears after it was modified, is written to the stream.OLD_IMAGE- The entire item, as it appeared before it was modified, is written to the stream.NEW_AND_OLD_IMAGES- Both the new and the old item images of the item are written to the stream.