| Interface | Description | 
|---|---|
| NSName | This interface provides Namespace support for Element and Attr names | 
| Class | Description | 
|---|---|
| Queue | |
| RegExprEngine | |
| UnicodeUtil | |
| XMLError | This class hold error message and the line number where it occured | 
| XMLUtil | 
| Exception | Description | 
|---|---|
| XMLException | Indicates that a parsing exception occurred while processing an XML document | 
https://www.oracle.com/database/technologies/appdev/xmldb.html