module Factory: sig endval connect : string ->
?host:string ->
?port:string -> ?user:string -> ?password:string -> string -> Dbi.connection
Throws Invalid_argument if the database type is not known. May
throw other connection-specific SQL errors.
val database_types : unit -> string listval register : string ->
(?host:string ->
?port:string -> ?user:string -> ?password:string -> string -> Dbi.connection) ->
unitDynlink)
by calling this function.