Versa: Path-Based RDF Query Language
Chimezie Ogbuji describes Versa, one of the first RDF query languages to be
pathcentric, taking cues from XPath.
Chimezie Ogbuji
Chimezie is a Lead Systems Analyst with the Cleveland Clinic Foundation's department
of Cardiothoracic Surgery where he's currently involved in advanced database system's
research for the purpose of designing an unprecedented semi-structured database for
facilitating the collection of patient data for clinical studies. He has over 7 years
of
experience in the area of XML and RDF consulting, technical writing, and software
development and have published a handful of articles and tutorials in various online
journals including: IT World, IBM Developer Works, and XML.com.
Articles by this author
Visualizing XSLT in SVG
XSLT stylesheets can rapidly become difficult to understand for anyone but their
original author. By using XSLT on itself, this article demonstrates how to create
a diagram
explaining the flow of control within a stylesheet.
Editing XML Data Using XUpdate and HTML Forms
This article shows how XSLT and XUpdate can enable easy generation of HTML forms
for web applications that need to let the user edit XML data through the
browser.
Validating XML with Schematron
Schematron is an XSLT-based language for validating XML documents. This article
explains why schema languages are required and introduces the principles behind
Schematron.