Describes Structured Query Language (SQL), the result of an American National Standards Institute effort to standardize language used to query computer databases and a common element in second generation database management systems. The discussion covers implementations of SQL, associated products, and techniques for its use in online catalogs,…

Describes the design and functions of a technical library database maintained on a mainframe computer and supported by the SPIRES database management system. The topics covered include record structures, vocabulary control, input procedures, searching features, time considerations, and cost effectiveness. (three references) (CLB)

This study proposes and investigates file ordering and retrieval techniques which, it is hypothesized, will: (a) reduce the average cost of retrieving records which satisfy a query, and (b) increase the rate of retrieval in the initial portion of the response period. (8 references) (Author)

Notes advantages and disadvantages of the DIALOG Predicasts files and provides instruction in their use. (RAA)

Describes the use of a microcomputer system at the elementary school level in which pupils can access information by subject, author, or title as in a standard card catalog. (CHC)

This essay considers the cost of information retrieval by databases and information centers, and explores the need to charge users for the information supplied. The advantages and disadvantages of three means of charging users are discussed: (1) connnect hour charge, (2) print/type charge, and (3) subscription. Also addressed is the practice of…

The development of special-purpose information products for clients of the LEADERMART information retrieval system is described. (9 references) (RS)

Discusses advantages and disadvantages of online availability of computerized versions of encyclopedias and notes works currently and soon to be online, searching strategies (subject headings and full-text), cost effectiveness, and librarian skepticism. (EJS)

These two articles discuss search strategies and the selection of databases. The first examines database selection when recommended database indicators are changed and database names are expanded in the EasyNet system; and the second discusses multifile searching versus single file searching in terms of success rates for novice users and cost…

This report describes approaches to database translation (i.e., transferring data and data definitions from a source, either a database management system (DBMS) or a batch file, to a target DBMS), and recommends a method for representing the data structures of newly-proposed network and relational data models in a form suitable for database…

This 26-item annotated bibliography cites articles and conference papers from 1981-1984 related to end-user searching of online databases in three sections: End-User Search Services and Systems, End User versus Intermediary, and Training of the End User. Questions concerning role of the librarian/intermediary and cost effectiveness of end-user…

Explores the use of analog optical disks as a practical, cost effective means of building picture databases. Questions that should be asked to determine whether optical disk is a suitable picture storage alternative for a particular application are identified and three implementation issues--imaging, indexing, and integrating--are discussed. (CLB)

Models administrative and operating costs surrounding a hypermedia database and identifies seven conditions for the cost justification of hypermedia. Concludes that cost considerations aside, hypermedia offers significant data retrieval benefits in accessing text, video, still pictures, and sound, and provides substantially better human…

The costs of creating and maintaining permanent files and retrieving keyword title indexes in TRIAL (Technique for Retrieving Information from Abstracts of Literature) are presented. This system, which is used for bibliographic control and file efficiency, is relatively easy to learn and use, and popular with school, academic, business, and…

Costs and cost-related factors connected with providing on-line search services through the public library are examined. The examination was based on preliminary results from an on-going evaluation of an experimental program (DIALIB). In the DIALIB experiment Lockheed's DIALOG search service was available to the public through four public…