Objectives

Even though this lab does not involve any programming, it does have an important and fundamental objective, that is$,$ to ensure you understand completely what the value of an XMLTree object looks like. Please make sure you answer each of the questions in this lab carefully and thoughtfully. Discuss them with the classmate sitting next to you and write down all the answers so that an instructor can check them out. If you encounter any problems or you have any doubts about any of the questions, please make sure you ask an instructor for help.

The Problem

The XMLTree family of components provides convenient functionality to read and process XML documents. Understanding the model of an XMLTree is essential to being able to use these components. This lab activity will take you step$-$by$-$step through the concepts needed to understand the model. In the next lab you will learn and practice how to manipulate XMLTrees with the methods provided by the XMLTree component.

Method

Carefully consider and answer the questions below.

What's a Tree?

Given the tree of colors below, answer the following questions.

What's the root of the tree?

What are the leaves of the tree?

What are the children of the node blue?

What is the parent of the node cyan?

What nodes are on the path from the root to the node orange?

What is the size of the tree?

What is the height of the tree?

What's XML$?$

Consider the following XML document and answer the questions below.

$1$

$2$

$3$

$4$

$5$

$6$

$7$

$8$

$9$

$10$

$11$

$12$

$13$

$14$

OK

Building

Dreese Labs

$40\mathrm{.}002382$

$-83\mathrm{.}015958$

CSE Department

What are the tags in this XML document?

What are the text strings in this XML document?

What are the attributes for each tag in this XML document?

Draw a tree that captures the structure $($nesting$)$ of this XML document.

Now consider the following XML document and answer the questions below.

$1$

$2$

$3$

$4$

$5$

$6$

$7$

$8$

$9$

$10$

George Gershwin

Leonard Bernstein

Rhapsody in Blue

An American in Paris

What tags have attributes?

For each tag with attributes, list the attribute name and the corresponding attribute value.

What's an XMLTree?