So before we write the XML Schema, a lot of tutorials use this:
<?xml version='1.0'?>
or
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<data-set xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
My question is, what is this part for? What is that website specifically and why do we use it? Are there other methods to do this?
If it helps, I am doing this to convert an excel worksheet into XML.