Discusses the use of optical disk technology in online searching and compares three versions of the ERIC database currently available on optical disk in terms of hardware requirements, ease of installation, scope and cost of the system, search procedures, displaying and printing results, and documentation and user support. (CLB)

This series of ten articles exploring users' reactions to optical data disk technologies, focuses on comparisons with online retrieval systems. The opinions of users and vendors on cost effectiveness, searchability, equipment requirements and performance, effectiveness, and efficiency are presented and discussed. (CLB)