MatchUp Object:Incremental:Key File
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This function compares the key generated by the most recent call to the BuildKey function to ones previously submitted to the incremental deduper and reports on whether or not any matches were found. It appends the key to the current key file. A typical application would use this function to add a new unique record to the key file if no duplicate was found by the last call to the MatchRecord function. It is also used as a common way to add transactions (adding the data relative to the key) to a master database, while flagging and linking it to existing matching records. This is also known as record linking without deduping.
Note: This function does not add the current record to the database. It only appends a new key to the key file.