Note 4 for XML
Watch & Read:
IE use to act like a low level validate tool.
The old XML Notepad (not the 2007 version) validates your XML
DTD Provides:
- A way to specify (restricting) the type of data that needs to be in the XML document (Validating)
- A documentation of the XML document's structure
- A sharable description of an XML Document (something to design toward)
USE a DTD to specify content (only one DTD per document)
To identify a DTD you need to specify a
<!DOCTYPE
You can have an internal, external or mixed reference (both)
Syntax for DTD:
Internal Reference : <!DOCTYPE RootElement [
<!ELEMENT name category> ... ]>
External Reference : <!DOCTYPE RootElement SYSTEM "filelocation">
<!ELEMENT name category> for defining Elements
<!ATTLIST element-name attribute-name attribute-type default-value > for defining Attributes of Elements
Element
will appear only once! |
+ Element
will appear one or more times! |
<!ELEMENT
element-name (child-name)> |
<!ELEMENT
element-name (child-name+)> |
* Element
will appear 0 or more times! |
|
<!ELEMENT
element-name (child-name*)> |
|
, Elements
must appear in the identified order |
|
<!ELEMENT
element-name (child-name1, child-name2, child-name3)> |
|
| Elements
can appear in any order |
|
<!ELEMENT
element-name (child-name1 | child-name2 | child-name3)> |
|
<![CDATA[ reference a script or <img src='foo.gif'> ]]> Sample of Character data and including a reference to a link
Review the following:
Class XML will be used for this demonstration. Create a DTD for this example!
Check http://www.w3schools.com for more examples of DTD
Terms you need to Lookup:
XML, DTD & Validation
Homework:
You should have an XML & HTML version of your resume!
Final Step:
Review in your mind everything we covered in class and remember to cover it again before you go to bed so your mind to process this information while you sleep.