Match Key Code - trillium_geolocation - 15.21

Match keys are generated using a Match Key Code (MKC). This describes the address component field data that should be used to generate the match key.

The data definition for each field contains four components:

• The field number, which is specified using the numeric equivalent of the field value in the Optima Field Type (OFT) enumeration

• The reading direction, which is either 'L' for left, or 'R' for right

• The character count

• The character type, which is either:

  • A for alpha

  • N for numeric

  • C for consonants

  • V for vowels

  • B for alphanumeric

  • E for everything

For example:

[22,L,20,B][19,L,5,A][14,L,5,N][15,L,5,A]

means match keys will be generated using:

• the leftmost 20 alphanumeric characters from the postcode

• the leftmost 5 alpha characters from the city

• the leftmost 5 numeric characters from the premise

• the leftmost 5 alpha characters from the street