Слайд 6
Parsing with SAX and DOM The Document Object Model
(DOM) API requires reading the entire XML structure and
holding the object tree in memory. The Simple API for XML (SAX) is an event-driven, serial-access mechanism that does element-by-element processing
Слайд 7
Querying in XML XPath //content/order_line[unit_price>=20]/unit_price/text() XQuery for $orderLine in doc("order.xml")//content/order_line[@quantity>1] where $orderLine/unit_price