Fourth installment of a directory published in four parts in "Database" (June and August) and "Online" (July and September) provides descriptions of 12 laserdisk products together with information on the producer, compatibility, type of laserdisk, search and retrieval software, interface with magnetic media, conditions of usage, price, and status.…

Introduction to use of compact disk technology for storing digital data highlights history, background, and developments; technical features; standardization issues; current CD ROM applications; and the market for CD products. A production diagram, a sampling of CD manufacturers and disk replicators, and performance comparison of three storage…

Acquaints information professionals with Digital Equipment Corporation's compact optical disk read-only-memory (CDROM) search and retrieval software and growing library of CDROM database publications (COMPENDEX, Chemical Abstracts Services). Highlights include MicroBASIS, boolean operators, range operators, word and phrase searching, proximity…

This review of public domain software (written by individuals who release programs for free copying and distribution) focuses on disk utility programs which deal with the manipulation of files on disks (finding, moving, changing, viewing, organizing, storing). Sources for identifying programs and three addresses for software distribution are…

Describes the requirements, data elements, functions and systems design for an online search log which maintains records of search services provided. (CWM)

Describes the use of a microcomputer system to generate a personal database of books read by adding titles, displaying title/author information, and editing title/author information and discusses the system design, i.e., file structure (author index, book index, book, author), the main driver, function subroutines, and screen subroutines. (EJS)

Describes the use of askSam, a flexible text based management system, for handling personal collections of bibliographic references. Sample programs and searches are provided for both unstructured (minimum input and programming by the user) and structure applications. (CLB)

Describes characteristics of hypertext, how it is currently being used, and discusses possible uses of hypertext in conjunction with online databases. An online medical textbook developed by BRS and Columbia Presbyterian Medical Center is described, links between databases are discussed, and future systems are suggested. (10 references) (LRW)

Describes Kodak's Photo CD technology, a format for the storage and retrieval of photographic images in electronic form. Highlights include current and future Photo CD formats; computer imaging technology; ownership issues; hardware for using Photo CD; software; library and information center applications, including image collections and…