[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Are Updates really needed in XQuery?
Situations where I would want updates... 1.) The ability to rename elements/attributes if a change in the document format ever occurs 2.) Addition of PIs to a group of documents, e.g. adding a stylesheet PI for a collection of documents is a NXD. 3.) Changing namespace information on documents based on old namespace URIs, e.g. changing "http://www.w3.org/2000/10/XMLSchema" to "http://www.w3.org/2001/XMLSchema " for documents written before the XML Schema REC. 4.) Replacement of typographical errors that may have occured in a large number of documents or in multiple parts of one document. 5.) Modifications of the structure a class of documents so that they conform to a certain schema especially if the documents will be used in data interchange scenarios with other entities. -- THINGS TO DO IF I BECOME AN EVIL OVERLORD #19 I will not have a daughter. She would be as beautiful as she was evil, but one look at the hero's rugged countenance and she'd betray her own father. ----- Original Message ----- From: "Brian Vickery" <macacos@l...> To: <xml-dev@l...> Sent: Tuesday, January 29, 2002 5:56 AM Subject: Are Updates really needed in XQuery? > I have a simple question, "Why do we need updates as part of the XQuery > language at all?" > > I have read the latest XQuery Update proposal (from the "XQuery Update > Proposal" by Patrick Lehti) and the older XUpdate WD. I come from a > database background and view updates as imperative to the XQuery/XPath > language, but can't state "why". I'm getting a lot of grief regarding > having Updates at all. The types of "inserts" and "deletes" typically shown > are just adding/deleting a document from a "collection" (if collections > existed and they should IMHO). > > Some examples are: > > 1. If I have a collection of XML invoices why would I ever want to update > these? An invoice is written once and never changed! > > 2. If I have a document centric collection of XML document I would most > likely version each document, thus why do we need updates? > > 3. If I have all my business contacts (companies I do business with) stored > in an XML collection, why wouldn't I just do a complete replace if I wanted > to change a companies name or address? > > Does anyone have any real life scenarios/business cases that "MUST" have > updates? > > thanks, > > > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this list use the subscription > manager: <http://lists.xml.org/ob/adm.pl> _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
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