The primary interaction with the database uses a threading operator like model, with the results of each query appended to the main result set.
qry-> ; intended for non transactional statement sets
trx-> ; intended for transactional statement sets
; on success
; select returns rows if any are present
; select returns nil if no rows are present
; insert returns generated id's as sequence
; update returns rows effected count
; on any exception
; all statements print exception to standard out and return false