Kuklenko, DmytryGodlevsky, MikhailMayr, Heinrich C.2020-01-072020-01-07200113-88579-331-8https://dl.gi.de/handle/20.500.12116/30740One of the aspects of the reengineering problem of legacy Information Management Systems for complex Technological Process, related with working out of new program components, destined for storing and processing the retrospective information concerning the functioning of Technological Process, was considered. As an object for re-engineering processing the Computer-Aided Information System (CAMS) of one of the plants of Romny (Ukraine) Gas Compress Station. A new CAMS program architecture, the model of new program component, which was named as Retrospective Database, and main aspects of its software implementation are considered in this paper.enText/Conference Paper1617-5468