Integrated development environment products, called CASE technology by practitioners, are being purchased by enterprises to assist systems analysts with the analysis and design of information systems. This work surveys users of a commercially available CASE product. Ninty-one users from 47 enterprises in the U.S. and Canada responded to the personal computer based survey. This work analyses the perceptions of the respondents in an attempt to determine productivity improvement over manual methods. Using the perceptions of the respondents, the component parts of the CASE product were rank ordered in terms of improved productivity. In addition to this, a psychometric preference scaling method was used to interpret the relatedness of the component parts to each other, again based on the perceptions of the respondents.