In this study the advantages and problems involved in using Generalized Data Management Systems (GDMS) to expand the capabilities of information retrieval (IR) systems are investigated. In particular, the design of a Data Manager-1 (DM-1) based system for the Reliability Analysis Center (RAC) at Griffiss AFB, Rome, New York is studied. A design methodology involving a cost criterion is developed. Total system cost and use cost components for each potential system output is explored. System cost is then obtained as a function of these cost components and user demand for outputs. This methodology is then applied to a set of design problems relevant to GDMS/IR data base design. A proposed data base for RAC embodying the solutions to these problems is then given. (Author)