Module alias 

Structs

AliasPhoneticKey

Emits a "phonetic_dob:CODE:YEAR" key for each name stored in a pipe-delimited alias field (e.g. SIS II alias_namen).

FuzzyYearKey

Phonetic blocking key that emits year-range variants for records with an estimated date of birth (the YYYY-01-01 Jan-1 convention), so estimated DOBs that differ by up to fuzzy_range years still share a blocking key.