a) What is the XML declaration and how does it identify the document as being XML? Provide XML syntax for the declaration in your answer and briefly explain the THREE parameters you used. 


b) State TWO reasons for using an XML schema.

c) In relation to XML data modelling:

• model a data source intended for a cinema;

• model the film title, age rating, and length of the film that is being shown in the cinema;

• provide XML mark-up for a film.

d) How does the AJAX model allow for an XML document to be sent from a web server?

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