Conceptual models are applied as the first step in software design methodologies for collecting the semantics involved in the universe of discourse. Nevertheless, the abstraction process creates some misunderstandings for novice designers, such as difficulties in modeling some constructs and in understanding the semantics that they represent. This…

Describes the use of the Z39.50 information retrieval protocol as the basis for Infocal, a read-only, client/server-based campus information system. Technical considerations in adapting the protocol to nonbibliographic data, including semantic modules, dynamic attribute sets, and dynamic record syntax, are described in detail. (Contains 11…

Predicts that, over the next several decades, technological advancements in large scale database construction and maintenance, high speed digital transmission networks, and highly precise intelligent searchware will result in a worldwide information system. A projected model illustrates pricing and retrieval rate changes that may be expected over…

Describes a survey of library systems and software vendors that examined the sources, management, and use of authority records in their systems and the functions of an authority control module within an integrated system. Several tables and graphs offer summaries and comparisons of vendors' offerings and capabilities. The questionnaire used is…