XMLTYPE has built-in functions to allow us to manipulate the data values being placed into the column defined as SYS.XMLTYPE. Data may be inserted into the table using the sys.xmltype.createxml procedure like this:
SQL> CREATE TABLE testxml (id NUMBER(3), dt SYS.XMLTYPE);
Table created.
SQL>
SQL>
SQL> INSERT INTO testxml VALUES(111,
2 sys.xmltype.createxml(
3 '<?xml version="1.0"?>
4 <customer>
5 <name>Joe Smith</name>
6 <title>Mathematician</title>
7 </customer>'))
8 /
1 row created.
SQL>
SQL> SET LONG 2000
SQL>
SQL> SELECT *
2 FROM testxml
3 /
ID DT
------------------------------
111 <?xml version="1.0"?><customer><name>Joe Smith</name><title>Mathematician</title></customer>
SQL>
SQL> drop table testxml;
Table dropped.
SQL>