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)

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…

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)

Five groups of searchers each performed searches using ONTAP ERIC to identify behaviors that differentiate among degrees of experience, and between searches of familiar and unfamiliar databases. Results showed that, compared to the experienced subjects, novices performed surprisingly well. Eight references are listed. (Author/SW)

Discusses methods for designing search strategies for maximum recall, including minimizing the number of concepts intersected, isolating key subtopics, adapting the strategy to the database, and minimizing problems with search words and codes. (Author/RAA)

Explains search commands for SERIDU, an online bibliographic search system developed at Brussels Free University. These commands and output formats are compared with Euronet commands (from which they were derived), with existing INFODOC storage system commands, and with the planned BIDULE system commands. An evaluation of SERIDU is included. (SW)

This paper discusses examples of searching vocabularies, i.e., lists of terms which have been prepared with the online searcher, rather than the indexer, in mind. These lists are categorized as: enhanced thesauri or subject heading lists, synonym listings, index term listings, and merged vocabularies. Eight references are provided. (EJS)

Compares the differences in coverage and utility of three substructure databases--Chemical Abstracts, Index Chemicus, and Chemical Information System's Nomenclature Search System. The differences between Chemical Abstracts with two different vendors--STN International and Questel--are described and a summary guide for choosing between databases is…

Reviews the advantages and disadvantages of different types of term combination using the positional logic capability of online information retrieval systems and describes a study in which searches for material on "microwave integrated circuits" were conducted in order to find the most economical way of generating the most relevant…

Describes innovative pricing structure consisting of low connect time fee, print fees, and search fees, offered by Chemical Abstracts Service (CAS) ONLINE--an online searching system used to locate chemical substances. Pricing options considered by CAS, the search-based pricing approach, and users' reactions to pricing structures are noted. (EJS)

Reviews three database systems available for searching generic chemical structure representations: (1) Derwent's Chemical Code System; (2) IDC's Gremas System; and (3) Derwent's Markush DARC System. Various types of searches are described, features desirable to users are discussed, and comparison searches are described that measured recall and…

A standard online search strategy involving use of acronyms is evolved and searches are performed over wide range of databases. Advantage gained by use of acronyms is measured with respect to free and controlled terms, and percentages of extra documents retrieved are given. Four references and sample searches are included. (EJS)

Discusses problem preparation and specification along with search strategies and techniques employed by an information scientist in assisting users of on-line data bases, and briefly reviews ways to save computer time. (CWM)

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)