Oracle DBMS_XS_FIDM
Version 19.2.0.1

General Information
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Purpose Undocumented. My demos all "work:" Meaning they don't create an exception. But I have no idea what they actually do if anything.
AUTHID CURRENT_USER
Dependencies
Only XMLTYPE    
Documented No
First Available 12.1.0
Security Model Owned by SYS with no privileges granted
Source {ORACLE_HOME}/rdbms/admin/dbmskzxp.sql
Subprograms
 
DBMS_XS_FIDM_DELETE
Undocumented dbms_xs_fidm_delete(contentXML IN XMLType) ;
DECLARE
 x XMLType := xmltype.createxml('<?xml version="1.0" encoding="utf-8"?>
       <ShoppingCartData xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
         <Id>Morgan</Id>
         <SiteId>1</SiteId>
         <ProductId>100</ProductId>
         <Quantity>2</Quantity>
       </ShoppingCartData>');
BEGIN
  dbms_xs_fidm.dbms_xs_fidm_delete(x);
END;
/
 
DBMS_XS_FIDM_INSERT
Undocumented dbms_xs_fidm_insert(contentXML IN XMLType) ;
DECLARE
 x XMLType := xmltype.createxml('<?xml version="1.0" encoding="utf-8"?>
       <ShoppingCartData xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
         <Id>Morgan</Id>
         <SiteId>1</SiteId>
         <ProductId>100</ProductId>
         <Quantity>2</Quantity>
       </ShoppingCartData>');
BEGIN
  dbms_xs_fidm.dbms_xs_fidm_insert(x);
END;
/
 
DBMS_XS_FIDM_UPDATE
Undocumented dbms_xs_fidm_update(contentXMLold IN XMLType, contentXMLnew IN XMLTYPE) ;
DECLARE
 o XMLType := xmltype.createxml('<?xml version="1.0" encoding="utf-8"?>
       <ShoppingCartData xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
         <Id>Morgan</Id>
         <SiteId>1</SiteId>
         <ProductId>100</ProductId>
         <Quantity>2</Quantity>
       </ShoppingCartData>');
 n XMLType := xmltype.createxml('<?xml version="1.0" encoding="utf-8"?>
       <ShoppingCartData xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
         <Id>Morgan</Id>
         <SiteId>1</SiteId>
         <ProductId>100</ProductId>
         <Quantity>0</Quantity>
       </ShoppingCartData>');
BEGIN
  dbms_xs_fidm.dbms_xs_fidm_update(o, n);
END;
/

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