Text databases

BRS Online Service contains over 150 bibhographic and fuU-text databases in the areas of biomedicine, science, technology, business, economics, humanities, and social sciences (37). BRS/After Dark is an after-hours PC oriented version of BRS Online Service, offered at reduced rates (37). 

Chemical Substructure Databases. Several patent databases are searchable by chemical substmcture (99). These are designed to give higher relevance of retrieval when searching chemical compounds than the bibHographic or full-text databases. 

Personal computers have introduced new ways to handle pdvate biblographic and text files. The most important factors to consider to achieve satisfactory results in building a bibhographic or text database are the type of information to be stored and the needs of the user. Types of information include correspondence, research results and documentation, meeting notes, and bibliographic references. Needs of the user to be considered should include the potential number of users of the database, restrictions for the access and display of the information because of privacy or proprietary reasons, and the retrieval mechanisms (eg, by keyword, authority list, controUed vocabulary, author, tide, date, or other document or information attributes). In addition, criteria for selecting and encoding information for the database need to be established. 

NERAC, bibhography. Full Text Database Searching, pub. no. PB92-860469, ToUand, Conn., 1992. 

The percentage of word-oriented databases continues to increase at a faster pace than numeric databases. The number of image databases was 358 in 1992, greater than twentyfold increase from 1989. Audio databases rose from 1 in 1988 to 109 in 1992. A breakdown of the subclasses within word-oriented databases is given in Table 3, showing that full-text databases have surpassed bibhographic ones. Directory databases are the third most numerous. 

Full text databases like Micromedex or the online version of Martindale or Stockley s Drug Interactions have the advantage of being easy to search and are frequently up-dated. References may be directly linked and thus easily retrieved. The information content, as with textbooks, mirrors the selection and bias of the authors. 

Full-Text Databases. Two vcmJui-pruvidcd full-text patent databases are LEXPAT, produced by Mead Data Central, and PATFULL, produced by Dialog Information Services. 

Remote login is the ability of a computer user in one location to establish an on-line connection with another computer elsewhere. Once the connection is established, the remote computer is used as if it were a hard-wired terminal of that system. Within the Transmission Control Protocol/Internet Protocol (TCP/IP) suite, this facility is called Telnet. Using Telnet, an Internet user can establish connections with a multitude of library catalogues, other bibliographic databases, university information systems, full text databases, data files (eg, statistics, oceanographic data, meteorological data, and geographic data), and other on-line services. Many of these connections are available to any Internet user and can be accessed without an account. 

BRS Online Service contains over 150 bibliographic and full-text databases in the areas of biomedicine, science, technology, business, economics, humanities, and social sciences (37). BRS/After Dark is an after-hours PC oriented version of BRS Online Service, offered at reduced rates (37). BRS/Moming Search is available only in Europe and retrieves information from the BRS Online Service databank. BRS/Colleague provides access to the BRS Online Service databank, but it is a menu-driven on-line service designed for use by health professionals with or without on-line search experience... 

CEN (Chemical 6c Engineering News Online) is a full-text database containing the entire text from each issue of the American Chemical Society s printed Chemical Engineering News weekly magazine. It covers 1991 to date. 

INVESTEXT is the world s largest full-text database of investment research reports. It contains business information on publicly traded companies in a wide variety of industries. It is produced by Thomson Financial Services and covers 1982 to date. 

Computer Generation of Structure-Effect Relationships from Text Databases... 

Nowadays, thanks to the availability, cost, and ease-of use of chemical structure databases, many of these text databases have been converted into a structure format, and most chemical databases are now structure searchable. A simple search of the Internet will show that many databases still lack chemical structures and therefore are not searchable by structure in the original format, for example, an online HTML page. These pages, however, can contain valuable information and, with the application of the appropriate name-to-structure (N2S) conversion tools can be made searchable. 

Adis PharmacoEconomics and Outcomes News 1994-. Chester, U.K. Adis International Limited. Daily. Adis Phar-macoEconomics and Outcomes News is a full text database and is the online equivalent to the weekly newsletter of the same name. It presents up-to-date analyses on world pharmacoeconomics and healthcare outcomes news, views, and practical application. More than 2000 major international medical, biomedical, and pharmacoeconomic journals are routinely scanned for inclusion. Available online. 

Protein and nucleic acid sequences are submitted electronically to the United States Patent and Trademark Office (USPTO) to avoid the introduction of errors in printed documents and to simplify the job of examining patent claims that include biosequences. Short sequence listings are printable in the USPTO s full text database, but for longer sequences the electronic sequence records are stored in the Publication Site for Issued and Published Sequences (PSIPS), located at http // seqdata.uspto.gov/. 

Full text databases are available from many sources, and will be supplemented by internal sources. With the increased amount of information available via the Internet there is the danger of a surfeit of information. This kind of knowledge base is divergent which does not always lend itself to problem solving. However, developments in the use of hypertext and content sensitive mark-up languages can provide links between databases and give a conceptual framework that... 

Keeler, L. C. (2006). Student satisfaction and types of interaction in distance education courses. Ph.D. dissertation. United States—Colorado Colorado State University. Retrieved September 2, 2008, from Dissertations Theses Full Text database. (Publieation No. AAT 3233345). 

INQUIRE - General and text database management system, hardware supported IBM mainframe, available from Infodata Systems, Inc., 5205 Leesburg Pike, Falls Church, VA 22041, U.S.A. 

This type includes mainly bibliographic and also full text database containing the individual publication from the primary literature as objects using character strings. Some such databases are hsted below ... 

The general design of these studies was as follows micro text databases were built-up in four different knowledge domains (for example ozone generation) each database consisted of 6 paragraphs, each one corresponding to a particular topic in the knowledge domain considered. The four expository texts could be presented on the screen, either in a conventional (linear) form or with some limited hypertext features. In the latter case, variations of procedure could exist... 

BI = bibliographic database CA = catalogue of chemicals db = database DADB = metadatabase of online databases DACD = metadatabase of CD-ROMs DAIN = metadatabase of internet resources FBDB = fact-based database FT = full-text database INDB = integrated database MD = metadatabase NU = numeric database RD = research database RE = reaction database ST = structural database TBDB = text-based database WWW = World Wide Web. 

The text-based databases are divided into bibliographic and full-text databases. They still completely dominate the fact-based and integrated databases in the online and CD-ROM categories. ... 

Full-text databases (FT). Text is considered in online databases as a means based on natural language to describe reality and to represent knowledge. Most online databases are text-oriented (word-oriented). 71% of the databases in the Gale Directory are text-oriented. Full-text databases have grown the most in recent years. ... 

In full-text databases the complete articles can be retrieved. They contain the complete text of a documentation unit. In most cases this text is completed with additional data-fields, e.g., descriptor, thesauri, classification code fields. An example of a full-text database is the CJRSC (Chemical Journals of the Royal Society of Chemistry) which is offered by STN. The document, shown in Search Example 2 on the topic of waste removal, is abbreviated. Apart from bibliographic information (author [AU], title [TI], source [SO], abstract [AB]) the full article with tables and figures can be retrieved. The information found is very comprehensive but also expensive in comparison to bibliographic databases (see Chemical Abstracts Service Information System and Inorganic Chemistry Databases). 

Text-based databases are still predominant in DADB and DACD. That means that in online databases and CD-ROMs still more bibliographic and full-text databases are found than fact-based and integrated databases. In both DADB and DACD over 60% of the evaluated databases are text-based. 

Bl = bibliographic databases FT= full-text databases NU = numeric databases... 

These include public and private stores of structures, either inside the organization (see Corporate Proprietary Databases, Section 5.3.8) or in the public literature (.see Full-text Databases, Section 5.3.9). The rights to the useful aspects may be already patented (see Patent Databases, Section 5.3.10), or the chemical (or a precursor) can be bought commercially (see Supplier Catalog Databases, Section 5.3.11). 

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