1. Introduction
Looking back since the manufacture of
the first products until today, companies
begun to stockpile documentation
accordingly to the discoveries of that time.
The fact is that those companies, which had
won, were the most effective ones.
Technology is advancing every day and this
trend contributes to improve the efficiency
of any domain. The involvement of new
technologies in areas such as health,
tourism, services, accounting means storing
information on data storages.
According to recent studies, data
warehouses have become the most
important discoveries in the field of
informational systems. The industry of data
warehouses has continuously developed in
terms of investments, available products and
accomplished projects. It is estimated that
about 90 % of multinational companies have
implemented data warehouses or working
on projects that involves the development of
data warehouses