1. A method of facilitating database access in speech recognition, said method comprising the steps of: ascertaining a plurality of possible subsequences corresponding to a database entry; creating a record of such subsequences and their correspondence to database entries; and at least one of: ascertaining unique signatures via determining whether a subsequence corresponding to a given database entry does not also correspond to at least one other database entry; and finding multiple occurrences of a given subsequence and grouping corresponding database entries into a confusion set.