Describes Structured Query Language (SQL), the result of an American National Standards Institute effort to standardize language used to query computer databases and a common element in second generation database management systems. The discussion covers implementations of SQL, associated products, and techniques for its use in online catalogs,…

Describes the planning, development, implementation and impact of online information systems at three academic libraries. Some of the issues discussed include the campus computing environments, factors affecting the selection of databases and search systems, the impact of the system on library staff and users, and future considerations. (CLB)

Describes PCBIS, a database program for MS-DOS microcomputers that features a utility for automatically converting online public access catalog search results stored as text files into structured database files that can be searched, sorted, edited, and printed. Topics covered include the general features of the program, record structure, record…

Each of three articles describes an academic library's online catalog that includes locally created databases. Topics covered include database and software selection; systems design and development; database producer negotiations; problems encountered during implementation; database loading; training and documentation; and future plans. (CLB)

Investigates methods of compressing headings identified by MARC subfield codes to reduce the size of browsable displays. An argument is made for sorting subdivisions by a conceptual, rather than an alphabetical, approach to present efficient browsable displays and relieve the user of the burden of data organization. (14 references) (Author/CLB)

Describes the development and implementation of software that provides a global change capability by allowing correction of a single heading in a large file of bibliographic records through programatic identification and replacement. Specific change processes are described, including name headings, geographic headings, and topical subject…

Describes a project at the Princeton University libraries that converted the pre-1981 public card catalog, using digital imaging and optical character recognition technology, to fully tagged and indexed records of text in MARC format that are available on an online database and will be added to the online catalog. (LRW)

The introduction to a special issue on locally loaded databases in online library systems discusses three trends in using technology to provide greater access to materials available in library collections: unification of local collections; access to outside resources; and inclusion of reference works and full text in online catalogs. (three…

Assesses the current state of reference structures in online public access catalogs (OPACs) in a framework defined by stagnation, progress, and future challenges. Outlines six areas for reference structure development. Twenty figures provide illustrations. (AEF)

Describes a pilot project by the University of California to provide access to biomedical and health sciences literature through the integration of the MEDLINE database into the University's MELVYL online union catalog. The discussion covers the design, implementation and evaluation of the system, current planning efforts, and key technical and…

Discusses the need to reassess the objectives of online public access catalogs and how those objectives might be met before costly investments are made in electronic versions of "other data" for online catalogs. Several objectives are outlined and their feasibility in the modern telecommunications environment is examined. (two references) (CLB)

Discusses the benefits of mounting commercial and local databases to provide online access and describes the approach taken by the University of Pennsylvania. The issues discussed include database, local data file, and software selection; agreements with online vendors; cost effectiveness; and actual use of the online files at the university. (CLB)

Describes a study that examined the search behavior of remote users of the University of California MELVYL online public access catalog by analyzing the transaction logs. Highlights include the number of searches, databases searched, number of retrievals, constructing search commands, problems with search terms, and effectiveness of searches.…

Offers a model for choosing among CD-ROM, end user access, mediated online searching, or locally mounted files as alternatives for extending online catalogs and replacing printed indexes. Estimates of demand and comparisons of costs made at Trinity and Clemson Universities provide a quantitative framework for selection. (Contains four references.)…