The NAMESPACE clause sets or identifies the namespaces that are contained in an XML document. 
                  
 
            
            
               Format
 
               	  
               	 
                
                  		

 
                  	 
               
 
               
              
            
            
               Syntax Rules:
 
               	  
                
                  	 
                  - Data-name-1 is an alphanumeric data item which contains the namespace URI (Uniform Resource Identifier). 
                     	 
                  
- Literal-1 is a fixed namespace URI. 
                     	 
                  
-  If the NAMESPACE clause appears on a group item's declaration, then data-item-1 must be defined directly within that group
                     item.