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Advice needed on placement of datatype validation methods
Subject: Advice needed on placement of datatype validation methods From: "Amit Rekhi" <amitr@xxxxxxxxxxxxx> Date: Thu, 8 Oct 1998 07:55:48 +0530 |
Hello, 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 .... APPROACH 1 I can use NOTATIONS to identify data validation processes with element content. eg. <?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"> ]> <start-ele datatype="Number">123</start-ele> where AlphabetChecker.vld and NumberChecker.vld could contain validation routines for checking alphabet and number datatypes. APPROACH 2 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 (JScript/VBScript/JavaScript) as languages to implement my datatype validation routines. 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, AMIT REKHI XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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