klkl

This is the XML document type definition I’ve come up with for the KQuestion project. The latest version will also be available at (klkl.co.uk/Kquestion/kquestion.dtd). Note: Although its not clear on this page (because of word wrapping) normally everything between each pair of < & > is on one line but it is clear in the above link.

KQuestion.dtd

<!ELEMENT QUESTIONBLOCK (SINGLEQUESTIONS|COMMONANSWERS|
MULTIPLESTATEMENTS|ORDEREDQUESTIONS)+>
<!ELEMENT ORDEREDQUESTIONS (SINGLEQUESTIONS|
COMMONANSWERS|MULTIPLESTATEMENTS)+>
<!ELEMENT SINGLEQUESTIONS (INSTRUCTIONS,(QUESTION)+)>
<!ELEMENT COMMONANSWERS (INSTRUCTIONS,ANSWERS,(QUESTION)+)>
<!ELEMENT MULTIPLESTATEMENTS (INSTRUCTIONS,ANSWERS,(QUESTION)+)>
<!ELEMENT INSTRUCTIONS (#PCDATA)>
<!ELEMENT QUESTION (TEXT,SCORE,CORRECTANSWER,(ANSWERS|STATEMENTS)?)>
<!ATTLIST QUESTION ORDER ID #IMPLIED>
<!ELEMENT TEXT (#PCDATA)>
<!ELEMENT SCORE (#PCDATA)>
<!ELEMENT CORRECTANSWER (#PCDATA)>
<!ELEMENT ANSWERS (ANSWER)+>
<!ELEMENT ANSWER (#PCDATA)>
<!ATTLIST ANSWER NUMBER ID #REQUIRED>
<!ELEMENT STATEMENTS (STATMENT)+>
<!ELEMENT STATEMENT (#PCDATA)>
<!ATTLIST STATEMENT NUMBER ID #REQUIRED>

There is very good documentation on document type definitions at W3C (http://www.w3schools.com/dtd/default.asp) you should read that if you want to know more.