Discussion of Web databases, or search engines for the Internet, presents a series of questions that can be used to analyze these tools based on library literature. Six search engines are analyzed; collection methods, indexing, and abstracting are compared; and a proposal for a future ideal Web database is included. (Author/LRW)

Describes study that compared the costs of online searching on six databases in four systems. Costs of the search phase and the output phase are analyzed separately; transmission rate and telecommunication costs are examined; and the effects of pricing structures on online searches are discussed. (five references) (LRW)

Describes an experiment that compared the performance of online and print tools in answering two types of ready reference questions: conceptual questions (requests for citations) and factual questions. The results show that online tools perform best for conceptual questions, but simple factual questions can be answered more quickly using print…

Examines and compares online sources for primary and secondary federal and state tax information. The criteria used to evaluate the four systems (CCH ACCESS, LEXIS, PHINet, and WESTLAW) include the contents of each database, search features, hardware requirements, software, pricing, availability of CD-ROM, online billing, and network…

Compares database characteristics, access, display, editing, new records, hard copy products, hardware, and price of CD-ROM catalog production products from seven vendors: Gaylord Information Systems; General Research Corporation; The Library Corporation; OCLC; Solinet; Utlas; and the Western Library Network. (MES)

Describes a procedure for information retrieval testing that is based on the comparison of statistically independent methods of retrieval applied to the same database. The probability ranking principle is discussed, the statistical meaning of relevance is examined, and the methodology is illustrated on a large database of MEDLINE records. (19…

Describes a conceptual model for integrating short scientific texts, which extends classical text storage and retrieval. A brief comparison with related approaches such as case-based reasoning and classification-based reasoning is also provided. (13 references) (Author/KRN)

Discusses the actual and potential impact of local shared automated library systems on the development of a comprehensive nationwide bibliographic database (NBD). Shared local automated systems are described; four local shared automated system models are compared; and the current interface between local shared automated library systems and the NBD…

Discusses the cost of constructing a hypertext database and suggests cost forecasting approaches that can be used to determine whether organizations can internally fund a hypertext database, or whether producers can afford to market hypertext databases. Production costs in differing hypertext strategies are also compared. (27 references) (LRW)

This followup to a 1989 study of current sources for bibliographic information on videos examines three main sources: (1) OCLC; (2) Bowker's Complete Video Directory; and (3) Video Source Book. Coverage is compared for new titles as well as for titles from the previous study, and differences between the three sources are described. (LRW)

Identifies and describes online databases containing references to materials on artificial intelligence, robotics, and expert systems, and compares them in terms of scope and usage. Recommendations for conducting online searches on artificial intelligence and related fields are offered. (CLB)

Discusses how to support effective interaction of users with heterogeneous and distributed information resources in a digital library environment. Compares usability, user preference, effectiveness, and searching behaviors in systems that implement interaction with multiple databases through a common interface, and with multiple databases as if…

Collecting weather data is a traditional part of a meteorology unit at the middle level. However, making connections between the data and weather conditions can be a challenge. One way to make these connections clearer is to enter the data into a database. This allows students to quickly compare different fields of data and recognize which…

Consumers are becoming more actively involved in making decisions about health care, but librarians have had difficulty providing them with current, authoritative, and readable information. Medical databases provide the best reference to information on most health questions, from the latest breakthroughs to information on treatment methods and…

Designed to assist educators in selecting a computer network, this paper contains a listing and description of seven networks that currently exist specifically for educators, and compares the quality of their services in the areas of accessibility, responsiveness, cost, text editing, humanization, guidance and documentation, control, forgiveness…