Advice needed on placement of XML datatype validation methods
amitr at abinfosys.com
Thu Oct 1 14:50:34 BST 1998
I am in the process of attaching datatype validation routines
for element content in my XML file. I have come up with 2 approaches (as
listed below)., but am not sure which is a better one. If someone could
give their expert opinions ....
I can use NOTATIONS to identify data validation processes with element
<?xml version="1.0" ?>
<!DOCTYPE start-ele [
<!NOTATION Alphabet SYSTEM "AlphabetChecker.vld">
<!NOTATION Number SYSTEM "NumberChecker.vld">
<!ELEMENT start-ele (#PCDATA)>
<!ATTLIST start-ele datatype NOTATION (Alphabet|Number) "Alphabet">
where AlphabetChecker.vld and NumberChecker.vld could contain validation
routines for checking alphabet and number datatypes.
I embed my datatype validation scripts in the XSL file I attach to my XML
data.I can embed my datatype validation scripts in HTML which will be
outputted by my XSL file (I am using XSL to do XML -> HTML transformation)
for elements in the XML file. In this case I could possibly use
Which of the 2 approaches is better?
These 2 approaches bring out the basic questions:-
Where to place datatype validation routines for element content, in the
XML-DTD or in the XSL file attached to the XML data?
Thanks in advance,
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