This method extracts a subset from the XML data using the given XPath expression.

Overload List:

• Extract(string, string)

  This method extracts a subset from the XML data represented by the OracleXmlType object using the given XPath expression and a string parameter for namespace resolution.

• Extract(string, XmlNameSpaceManager)

  This method extracts a subset from the XML data represented by the OracleXmlType object, using the given XPath expression and a .NET XmlNameSpaceManager object for namespace resolution.