Oracle XML DB Using Views

Question

I created a view for XMLType table. When I insert rows into table they are not reflected in view.
CREATE TABLE EMPLOYEE OF XMLType
  XMLTYPE store AS OBJECT RELATIONAL
  XMLSCHEMA "EMPLOYEE.XSD" ELEMENT "root";
  CREATE OR REPLACE VIEW
  employee_master_view(empid, empname, empproj, emporg)
AS SELECT extractValue(OBJECT_VALUE, '/EMPLOYEE/empid'),
          extractValue(OBJECT_VALUE, '/EMPLOYEE/empname'),
          extractValue(OBJECT_VALUE, '/EMPLOYEE/empproj'),
          extractValue(OBJECT_VALUE, '/EMPLOYEE/emporg')
     FROM EMPLOYEE;
INSERT INTO EMPLOYEE VALUES (XMLType(bfilename('XML_DIR', 'EMPLOYEE.XML'),
                                     nls_charset_id('AL32UTF8')));
SELECT object_value from employee;
OBJECT_VALUE                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
SYS.XMLTYPE
SELECT extract (object_value, '/') from employee;
EXTRACT(OBJECT_VALUE,'/')                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
<root><empid>1</empid><empname>Gates</empname><empproj>EIS</empproj><emporg>Tata Cosultancy Services</emporg></root>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
1 rows selected
desc employee_master_view;
Name                      
Null
Type                                                                                                                                                                                    
EMPID                              
VARCHAR2()                                                                                                                                                                              
EMPNAME                            
VARCHAR2()                                                                                                                                                                              
EMPPROJ                            
VARCHAR2()                                                                                                                                                                              
EMPORG                             
VARCHAR2()                                                                                                                                                                              
4 rows selected
select empid, empname, empproj, emporg from employee_master_view;
EMPID     EMPNAME     EMPPROJ     EMPORG
1 rows selected
This returns empty rows. It should be printing the values of the xml tags in the columns.
Please help.

Answer 1

extractValue(OBJECT_VALUE, '/EMPLOYEE/empid'),
I don't see any "EMPLOYEE" element in your sample XML document. Do you?
Try this XPath instead : /root/empid
And be aware extractValue and alike are deprecated starting from 11.2.