13.
The XML elements cannot be empty. Is it true?
No, it is not true.

14.
Describe the role that XSL can play while dynamically generating HTML pages from a relational database.
The SQLXML 3.0 and advanced versions provide the facility of mapping the SQL queries output with XSLT templates. It uses XSLT to present the records that are retrieved from databases on Web pages (HTML pages).

An application can use XSLT to modify the output that is retrieved from data sources and display the output by XSL templates. The XSLT displays data without affecting the database query and the code of application.

15.
What are the advantages of DOM?
The following are the advantages of DOM:
  • DOM stores the entire XML document into memory before processing. Therefore, the XML structure can be easily modified and values can be added, changed, and removed.
  • DOM enables to traverse the XML structure in any direction. It means that you can access any node of the XML structure by traversing through the XML structure.

16.
Give an example of a DOM-enabled XML parser.
The XML parser is MSXML, which is fully DOM-enabled.