The essence and content of some fundamental terms of the general and applied informatics, the latest regarding to the economic informational activities, are cleared up. It confirmed the correctness of the application of these terms, their scientific and practical importance in development (advancing) of the investigations and efficiently daily working of economic informatics systems (E.Ic.S.). All these it refers mostly to the organizational stage of the unitary informational process of the economic management system. In this regard are highlighted and analyzed the evolution, notions, premises and trends of development of the organizational forms and units what ensuring the daily functioning of the E.Ic.S.
As one the most progressive at one and in immediate prospect is formulated a variant of the notion of the data bank (D.Bn.) - internal informatics organizational form, the factors, what are contributed to it constitution and working. Are distinguished the trend of final evolution of this bank.