[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Some Problems about Sax
At 2007-12-10 15:57 +0800, james jiang wrote: > I'am confused about the concept of SystemId and publicId in > sax. Could anyone tell me the difference between them and what they > exactly mean. The system identifier is a reference to external resource. When on the DOCTYPE, that resource is a parameter entity that defines the external declaration subset of either or both vocabulary constraints (element content models and attribute definitions) and entity replacement text. The public identifier can only be specified in conjunction with the system identifier, not alone. A processor looking for information from any external resource can choose to try and resolve the public identifier, or choose to ignore it and just use the system identifier. The specification does not indicate how resolution is done. Formally these are defined here: http://www.w3.org/TR/2006/REC-xml-20060816/#NT-ExternalID I hope this helps. . . . . . . . . . . . Ken -- Comprehensive in-depth XSLT2/XSL-FO1.1 classes: Austin TX,Jan-2008 World-wide corporate, govt. & user group XML, XSL and UBL training RSS feeds: publicly-available developer resources and training G. Ken Holman mailto:gkholman@C... Crane Softwrights Ltd. http://www.CraneSoftwrights.com/x/ Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (F:-0995) Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/x/bc Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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