[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Type is not a big deal (was Re: Proposition: "SGML is Gumming Upthe Work
At 10:14 PM +0800 12/9/98, Paul Prescod wrote: >The hardest part of coming to a new domain is recognizing what parts of >what we know from other domains do NOT apply. <grin> I think this is a two-level process. First is recognising that the surface rules from other domains don't apply. Second is identifying common patterns and meta-rules behind both domains. Learning something new gives you insight into old areas of expertise. >In my opinion, you must THROW OUT the notion of type to make progress on >this front. Of course, you can then re-introduce the notion of type at >some higher level. The approach I've adopted for our database mapping is - elements map to fields, thus element names being the same in different contexts is indicative of possibly similar content but not a guarantee. eg: Name would have similar semantics inside Person and Class. - data types come from attributes or DTD/some other schemata. Name would be of character type initially. If the data type is a subclass of character data, and Name in both contexts ends up being the same subclass then it is vastly more likely that the data serves the same purpose in those contexts. This is not new or distorted for an XML perspective. Data typing of fields in databases indicates only some of the semantics of the field. The rest are context-dependent. This is true whether using object-oriented or relational databases. Andy Dent BSc MACS AACM, Software Designer, A.D. Software, Western Australia OOFILE - Database, Reports, Graphs, GUI for c++ on Mac, Unix & Windows PP2MFC - PowerPlant->MFC portability http://www.highway1.com.au/adsoftware/crossplatform.html xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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