宅學習 - Social Learning Space 社交學習空間@FJU CSIE

一開始笨笨的直接把xml丟到IE，

結果很像不會顯示出範例那樣的畫面，

後來才發現要用工具打開，

不過這是提外話，

dtd的語法好像之前學過網頁的語法，

只是dtd很像都是由實體組成，

如果寫太龐大的東西會變的很複雜 就是了。

Elements vs. Attributes

The same:

• Data can be stored in child elements or in attributes.

THE Differents:

Some of the problems with attributes are:

• attributes cannot contain multiple values (child elements can)
• attributes are not easily expandable (for future changes)
• attributes cannot describe structures (child elements can)
• attributes are more difficult to manipulate by program code
• attribute values are not easy to test against a DTD

If you use attributes as containers for data, you end up with documents that are difficult to read and maintain.

Try to use elements to describe data. Use attributes only to provide information that is not relevant to the data.

資料來源:http://www.w3schools.com/