The first part of this article concerns certain assumed trends of the development of the GUHA method. Particular attention was paid to the calculus of open observational formulae as a means for making it possible to declare derived quantities as parameters of GUHA procedures. In the second part of the article, problems are discussed, which are to be solved for providing the software and for the development of the GUHA method in the mentioned trends. Main features of the database systems GUHA-DBS as a means for solving the problems mentioned are outlined. The database system GUHA-DBS is described in more detail in Pokorný & Rauch (1981). It is assumed that the reader knows the works of Hájek & Havránek (1977, 1978a) and Rauch (1978).