Introduces the multicharacter trie as an index structure that can improve the time needed for retrieving full-text materials stored on CD-ROMs. The advantages of this structure compared to other structures are described, and experimental results comparing it to the widely used B+ tree and other structures used for full-text retrieval are…

Compares pricing of seven CD-ROM-based public access catalog systems for libraries of diverse sizes and groupings. Other features of the systems are outlined in the broad areas of database preparation, indexing, database updates, hardware, information retrieval, library controlled elements, interlibrary loan, reports, user support, future…

Analyzes the currency of the information found on SilverPlatter's Medline CD-ROM. Results show that the currency of information can vary tremendously. Priority level, periodicity, and prior database were found to have a low but highly significant influence on currency. Six tables and nine figures show results. (Author/AEF)

Explores the new storage technology of optical data disks and introduces a data structure, the inverted signature tree, for storing data on optical data disks for efficient text searching. The inverted signature tree approach is compared to the use of text signatures and the B+ tree. (22 references) (Author/CLB)

In 1989, the Online Computer Library Center (OCLC) introduced a microcomputer-based evaluation tool called the Collection Analysis CD. In 1993, the SUNY Stony Brook Libraries used this tool to measure its collections against those of 27 Association of Research Libraries (ARL) peer libraries and of a "mythical" peer group. In 1996, the…

Presents the results of a comparative evaluation of four CD-ROM retrieval software packages using the Revised Richards-Brown CD-ROM Software Evaluation Model. CD Answer, SPIRS, KAware2, and ROMware are evaluated, and results indicate that SPIRS and CD Answer are the favored packages. (LRW)

Explores the 1988 "Books in Print Plus" (BIP Plus) CD-ROM database to determine broad characteristics of material currently in print in U.S. book trade in terms of publication year; price; language; and audience, grade level, and illustration. Accuracy and potential of BIP Plus as a tool for generating data and testing hypotheses…

Reports results of a comparison of the Academic Index on CD-ROM and four indexes on the OPAC (online public access catalog) at Brooklyn College (New York): General Science Index, Humanities Index, Readers' Guide to Periodical Literature, and Social Science Index. Coverage of the "New York Times" was found to be important. (LRW)

Describes the partnership between the public and private sectors in developing and marketing the ERIC database in CD-ROM format. Particular emphasis is given to the marketing research and protocols of partnership that were developed. (Author/CLB)

Discussion of quality control in online and CD-ROM databases focuses on the problem of data elements that are omitted from records. Completeness testing is discussed; search strategies are described; and a case study of Bowker's Video Directory, part of the Children's Reference Plus database, is presented. (eight references) (LRW)

Discusses studies of CD-ROM life span done by 3M and the Federal Special Interest Group for CD-ROM Application and Technology (SIGCAT) and concludes that CD-ROMs have long life spans. A table presents test results, and industry specifications for CD-ROM discs and drivers are examined. (EA)

Describes the WHDB (World Trade Database), an Austrian information service that provides worldwide commodity trade statistics. Results of a survey of available data sources that examined contents, user-friendliness, costs, retrieval language, service, and performance are presented; and online and CD-ROM databases are compared. (nine references)…

Summarizes the findings of a recent study on the indexing practices used in the Library and Information Science Abstracts (LISA) database. Descriptors, or indexing terms, from the thesaurus are analyzed; searching implications are discussed; and the relationship between the classification code and the descriptors is examined. (Contains 21…

Describes a study that investigated factors associated with frequency of use of ERIC CD-ROM in an academic library, including gender, age, level of familiarity with computers, and level of study. The implications of the findings for the allocation of library resources and personnel to meet users' needs are discussed. (11 references) (CLB)

This 2-year project at the University of Texas at Arlington (UTA) was conducted to determine the feasibility of providing online periodical indexing to the journal holdings of the UTA libraries by demonstrating an extended use of the libraries' NOTIS Online Public Access Catalog (OPAC) to provide better access to local resources. Three approaches…