Try It Out Reverse Engineering a Schema You (Web design software)
Try It Out Reverse Engineering a Schema You will need to have Java installed to run Trang, specifically a Java Runtime Environment (JRE) for the Java 2 Platform, Standard Edition (J2SE) version 1.4 or any later. This is a free download from http:// java.sun.com/j2se/downloads.html. Trang itself is available from www.thaiopensource.com/relaxng/trang.html. Once you have Java and Trang installed, follow these steps: 1. Copy the RSS 2.0 example file rss2example.xml into the directory into which you installed Trang. 2. Open a command window in that directory. 3. Enter the following command: java -jar trang.jar rss2sample.xml rss2.rnc After pressing Return, the command prompt should reappear, hopefully without any error message. If you look in the current directory you should see a new file, rss2.rnc. 4. Open rss2.rnc in a text editor. You should see the following: default namespace = start = element rss { attribute version { xsd:decimal }, element channel { title, link, description, element language { xsd:NCName }, pubDate, element lastBuildDate { text }, element docs { xsd:anyURI }, element generator { text }, element managingEditor { text }, element webMaster { text }, element item { title, link, description, pubDate, element guid { xsd:anyURI } }+ } } title = element title { text } link = element link { xsd:anyURI } description = element description { text } pubDate = element pubDate { text } 259 Modeling Feed Data
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