In our day to day software development process we often come
across the situations wherein we have been given some XML files and asked to
convert them into XSD’s.
What is XSD?
XSD can be used to express a set of rules to which an XML
document must conform in order to be considered 'valid' according to that
schema. However, unlike most other schema languages, XSD was also designed with
the intent that determination of a document's validity would produce a collection
of information adhering to specific data types.
This post step by step explains how to create a XSD file
using existing XML file. We will
use a tool called “Trang” for achieving this.
Steps:
1) Go to Trang’s project's download
page and download the latest version. At the current time, the
file trang-20091111.zip is
the latest.
2) Extract the ZIP archive
and inside you will find a JAR file
called trang.jar. Contents of the zip file will be as below.
3) Copy the trang.jar file to your project where you have
your XML file.
Contents of my Employee.xml is as below:
4) Open the command prompt and then go to your XML folder. Assuming
you have installed java,
Then type java –jar trang.jar
Employee.xml Employee.xsd
Take a brief look at the generated Employee.xsd and replace
any very specific element types (in this case thexs:NCName) to more
simpler types, such as xs:string.
Very simple isn’t it?
