Hi, I'm new to XML and have been struggling. Where have I gone wrong in this bit of code?


<?xml version="1.0" encoding="utf-8"?><!DOCTYPE bibliography [
<!ELEMENT bibliography (book+)>
<!ELEMENT book (author+, title, pub? year, URL*)>
<!ELEMENT author (
(givenname | nickname)? surname)>
<!ELEMENT givenname (#PCDATA)>
<!ELEMENT nickname (#PCDATA)>
<!ELEMENT surname (#PCDATA)>
<!ELEMENT title (#PCDATA)>
<!ELEMENT pub (#PCDATA)>
<!ELEMENT year (#PCDATA)>
<!ELEMENT URL (#PCDATA)>
]>
<bibliography>
<book>
<author>
<nickname>Fred</nickname>
<surname>Flintstone</surname>
</author>
<author>
<givenname>Helen</givenname>
<surname>James</surname>
</author>
<title>"Statistical Database Disclosure"</title>
<year>2006</year>
<URL>http://some.webaddress.com</URL>
<URL>http://another.webaddress.com</URL>
</book>
<book>
<author>
<surname>Simpson</surname>
</author>
<title>"Homer's Odyssey"</title>
<pub>Springer Verlag</pub>
<year>2003</year>
</book>
</bibliography>

<journal>
<book>
<author>
<givenname>Alf</givenname>
<surname>Turner</surname>
</author>
<author>
<nickname>Roddy</nickname>
<surname>Stewart</surname>
</author>
<title>lifecycles</title>
<pub>lifepublishing</pub>
<year>1999</year>
<URL>http://some.webaddress.com</URL>
</book>
</journal>

I was given up to </bibliography> and had to add journals to it with 2 entries.
Any help would be appreciated.
Thank you

<!ELEMENT URL (#PCDATA)>
]>
<bibliography>

]>

<!ELEMENT URL (#PCDATA)>
]>

Is that where I've done something wrong?
I checked my code on a xml validator and got 15 errors.

I don't understand what I've done wrong and what it should be.

Hi,
The term "PCDATA" is a placeholder for info used in your particular document. Try the tutorial and references at:
W3Schools Online Web Tutorials
Peace,
Clarke