This directory of the major bibliographic databases that are offered by more than one vendor lists the producer, subject, vendor, maximum and minimum online charges, online hit charge, and offline print charge. The pricing systems of nine vendors are described. The directory appears every February and August in "Online Review." (EM)

Analyzes data from quarterly surveys of vendors to determine revenues and usage of government databases and identify those receiving high revenues and high usage. It is concluded that the current decline in their market share is due to increasing numbers of databases from the private sector rather than actual usage. (EM)

The Document Delivery Service offered by Chemical Abstracts is described in terms of the DIALORDER option on the Dialog information retrieval system, mail requests, and requests transmitted through OCLC's Interlibrary Loan system. Transmission costs, success rates, delivery rates, and other considerations in utilizing the service are included.…

A directory of 246 nonbibliographic data bases, which are also known as data banks and numeric data bases. Entries are arranged alphabetically by name of data base, followed by name of data base producer, subject content, and online vendor. This directory updates the listing published in Vol. 1, No. 4 of On-Line Review. (JPF)

Discusses the need for computer assisted strategies to search multiple databases. A method is presented in which a pool of predefined searches is set up and a strategy is developed to identify an optimal search path. The application of this method is illustrated using a search carried out in seven databases. (11 references) (CLB)

Defines corporate family searching as the act of using computerized databases to identify a parent company and all of its related companies. Business databases available on Dialog that can be searched to trace a corporate family are identified and appropriate search strategies are described. (CLB)

A comparison of ERIC and LISA (Library and Information Science Abstracts) indexing of the three journals--Online, Online Review, and Database--revealed some differences but more similarities in number of terms per article and concepts per article. A vocabulary which distinguished the field of online searching did emerge. (Author/EM)

Describes the Information Market Indicators survey that monitors online vendors, database producers, and specific databases in terms of the revenues generated and number of connect hours of usage. Highlights and facts relative to calendar years 1982 and 1983 (usage, revenue data, vendor databases, database producers, classes of users) are…

Sixteen queries, performed on the two systems, resulted in 247 unique relevant references from EMCS and 559 from TOXLINE. The overlap varied considerably, from 6 to 50 percent. It is remarkable that TOXLINE, with nine subfiles specially compiled for toxicology, can be supplemented by EMCS, which in the present study delivered 31 percent of all the…

Survey to determine impact of online availability on subscriptions to printed publications found 2-5 percent annual attrition in subscriptions to printed publications over past five years is not related solely or primarily to availability of online databases, and evolution of online databases and printed publications as separate entities is…

Describes the six tasks required in the development of an online database: analysis, design, programing, testing, loading, and documentation. Figures illustrate file formats, and a bibliography lists five sources. (FM)

Classifies the types of online databases available through System Development Corporation (ORBIT) and Lockheed Information Systems (DIALOG) that access government information; briefly describes those which include access to government sources; and discusses in greater depth five databases which exclusively access U.S. Federal Government Documents.…

Describes the "Toronto Globe and Mail" database-the first example of the entire text of a major daily newspaper online, and notes the file elements and possible search strategies. (RAA)

Reports on a study that examined scope notes added to subject headings in the Library and Information Science Abstracts (LISA) Online User Manual. Types of messages conveyed by scope notes and word patterns within the notes are identified, and comparisons between the 1982 and 1987 editions of the manual are made. (16 references) (MES)

Outlines major online agricultural information services--agricultural databases, databases with agricultural services, educational databases in agriculture--noting services provided, access to the database, and costs. Benefits of online agricultural database sources (availability of agricultural marketing, weather, commodity prices, management…