39. A system according to claim 38 , wherein said storage means stores data relating to said plurality of different versions in a master file versions database table.
39. A system according to claim 38 , wherein said storage means stores data relating to said plurality of different versions in a master file versions database table. 40. A system according to claim 39 , wherein the database additionally comprises a database table having a single record for said master file identifying a latest version of said master file.