Outlines evaluative criteria and compares optical data disk products used in library technical processes, including bibliographic records for cataloging, acquisition databases, and local public access catalogs. An extensive table provides information on specific products, including updates, interfaces, edit screens, installation help, manuals,…

Presents a guide to assessing optical data disks based on descriptive evaluation (facts about the product), comparative evaluation (whether the content is available in another form) and use evaluation (who will use it, why, and how). A checklist of evaluation criteria is provided. (CLB)

Discusses the results of a survey of commercial CD-ROM databases and compares them with previous annual surveys. Topics discussed include the rapid growth in number of available titles; types of databases; subject areas; hardware requirements; frequency of updates; prices; and CD-ROM's potential as a publishing medium. (seven references) (LRW)

Reviews developments of online systems in 1986, including available services and databases in several areas, and advances in information storage techniques. The impact of online services on the present and future responsibilities of professional searchers is discussed. (CLB)