"ocaml_beginners"::[] close a PGSQL connection

[Mihamina Rakotomandimby-6]

Hi all,
To get the result of a query, I use:

open Postgresql
(* ... *)
let results requete =
   let c = new Postgresql.connection ~host:"localhost"
                                     ~user:"mihamina"
                                     ~dbname:"db_molanga" ()
     in
       let r = c#exec requete
       in
         c#finish;
         r;;

I would like to close the connection (c#finish) after executing.
Is this an acceptable way to do things?

Thank you.

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