Type of field primarily used in the match. This is the main criterion for the search that builds the initial list of potential match candidates. This key type should be based on the main type of data stored in the base object.

Size of the search range for which keys are generated.

Path component for this fuzzy match key. This is a table containing the column(s) to designate as the key type: Base Object, Child Base Object table, or Cross-reference table.