When you have an XML file of a large size, the big split feature helps you to divide the large XML file into many smaller files. You can parse the files without facing any memory constraints by splitting the large XML file.
You need to mention the XML file path along with split tag while creating a connection. For example, C:\MyWorkspace\XML.xml;splitTag=<Patient>.
Note: You can implement big spilt feature when the XML file size is greater than 100 MB. Split tag is the first unbound element from root node for a particular schema.