is a computer–based system for acquiring, storing, organizing, searching and distributing digital materials for
end user access. It is not just a collection of material in electronic form; it includes a browser interface and
perhaps a virtual space and society. It requires less space and the data can be made available through
communication networks to anyone anywhere, while facilitating searches with speed. The digital is not a
single entity and as such is linked to the resources of many such collections [5, 6].