[log in to unmask] writes:
 > Just imagine some form of search tree and/or hash mechanism,
 > only replace the access types with Direct_IO.Count

Don't imagine, just grab Adbm from my homepage. This is an indexed
file implementation using a hash code at the first level and then a
B-Tree on disk... don't remember all the details since I have done it
long time ago, I have used it a lot and it seems quite stable...

Pascal.

--

--|------------------------------------------------------
--| Pascal Obry                           Team-Ada Member
--| 45, rue Gabriel Peri - 78114 Magny Les Hameaux FRANCE
--|------------------------------------------------------
--|         http://perso.wanadoo.fr/pascal.obry
--|
--| "The best way to travel is by means of imagination"