Match keys, which are fixed-length, compressed strings consisting of encoded values built from all of the columns in the Fuzzy Match Key of a fuzzy-match base object. Match keys contain a combination of the words and numbers in a name or address such that relevant variations have the same match key value.

Non-encoded strings consisting of flattened data from the match columns (Fuzzy Match Key as well as all fuzzy-match columns and exact-match columns).