Discusses the development of multiobject databases called large data constructs (LDC), which may contain images and recorded or synthesized voice as well as text. Virtual reality and cyberspace are discussed, selectivity and database content are examined, database management systems are described, and retrieval options are reviewed. (three…

Discusses development of digital optical discs and considers both positive and negative features of CD-ROM for information services. Topics discussed include microcomputer-based databases; cost effectiveness; online searching by users; new user populations; the status of information specialists; lack of standards; and future possibilities. (Five…