Very Large Information Services as Sources of Data to Subject Databases

The collecting of relevant data is most important and laborious activity in scientific thematic centres. Some approaches are applied to fulfil it more effectively. In this paper we consider how to use global information retrieval systems in science and knowledge as sources for data centres in a thematic field. The description of developed software is provided. It is shown as example that the use of such resources promoted the Thermophysical Centre in the Russian Academy of Sciences (thematic field ― thermophysical properties of substances) to reduce essentially efforts to update its DB with high rank information. Some very large information systems (VLIS) are considered from the view of appropriate means for transfer the results of search into a subject DB.