Abstract:
The article is about the algorithm of the terms tree construction using Z39.50 protocol. The object
of research is the thesaurus of Information Technology which is based on Zthes standard data
scheme. The alternative approach based on the CQL query language is also contemplated in the article.
There are many thesauruses in the world. And each thesaurus has a different structure. Consequently
there is a problem of universal access to the thesaurus and data representation. The aim of
research is to develop an application for abstract access to the thesaurus.
The research approach is based on analysis of standards, data scheme for thesaurus and search
attributes representation. PHP programming language and Z39.50 protocol were used for application
development. Protocol Z39.50 is a standard of network access to databases. The thesaurus on
Information Technology is based on Zthes data scheme and supports Z39.50 protocol requests processing.
As a result of the research the application for abstract access to thesaurus was developed. The
application allows users searching terms in the thesaurus. The search result is presented in an XMLfile.
The XML-file is visualized in browser using XSLT-transformation.
Keywords:thesauruses, Z39.50 protocol, data scheme, XSLT-transformation, the terms tree, RPN-query.
