6

Question 1

XML ? Use ?

Answer 1

Extensible Markup Language

• Store and transport data
• Be both human and machine readable

Question 2

What HTML problems does XML resolve ?

Answer 2

• Same HTML code can be displayed differently in many different browsers
• Some browsers have proprietary HTML tags
• HTML does not include semantics (meaning), which is needed for e-commerce bots

Question 3

Sample XML code ?

Answer 3

Algorithmic Game Theory Nisan et al. 9780521872829

Question 4

Difference between XML and HTML ?

Answer 4

• XML has no pre-defined tags as HTML. We define our own tags to give meaning to their content.
• Other apps are needed to send, receive or display XML, as XML itself does nothing.

Question 5

Why is XML called extensible ?

Answer 5

Because all XML applications continue to work smoothly if new data is added or removed.

Question 6

What is an XML attribute and what is it used for ?

Answer 6

A feature tag, usually as a CSS id.

Used to store metadata.

Question 7

For what is XML best suitable ?

Answer 7

• Multiple types of data in different formats
• Large processes are on client computers eg automated processing of stock market data
• Many users need different views of the data
• Mobile objects: pricebots, shotbots

Question 8

What is XML parsed into and how ?

Answer 8

Browsers have built-in parsers which convert XML to DOM objects.

Question 9

DOM ?

Answer 9

Document Object Model

Question 10

Non-validating parser ?

Answer 10

Parser only checks that each tag is matched by an end-tag.

Question 11

Validating parser ?

Answer 11

Parser which checks all rules in the DOM are respected.

Question 12

COMP315

Get value of XML element ?

Answer 12

txt = xmlDoc.getElementsByTagName (“title”)[0].childNodes[0].nodeValue

Question 13

SVG ?

Answer 13

Scalable Vector Graphics

Question 14

CDF ?

Answer 14

Channel Definition Format