[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: XLink - Assert linking relationships among more than two resource s
KenNorth wrote: Perhaps Hien was asking about "referential integrity" in the database context, which means more than asserting a linking relationship. The relationship, and rules about the relationship, are defined to a container (database) that blocks actions that would subvert data integrity. I approached this subject last summer. Basically my solution is this: 1) XML is a data format. A transport tool so to speak. 2) Applications may dynamically create XML files which contain content. 3) This content, when created, may contain relationships which reflect exactly the condition of the source data. This includes RDB relationships. 4) It is up to the Application to create it correctly. 5) XML COTS tools or homegrown tools can be used to maintain the data 6) If a COTS tool is used it will at best verify that the current version of the data is valid and well formed according to XML rules. 7) The Application or homegrown tools must verify the unique conventions created to reflect the RDB... Hien - I hope this sheds some light on how you can create an environment that works now. This list and others are constantly working on ideas to put more controls or layers on XML. Sometimes I wonder if this is really the right approach. I like the KISS method. XML does a great job of formatting data. It is readable. Anyone can then process it. Should they try to provide behavior that a RDBMS or ORDBMS does? An example is your request to verify referential integrity. A program can be created to verify how you implemented referential integrity. But this currently needs to be customized based on how you implement it. Bill Sparkman *************************************************************************** This is xml-dev, the mailing list for XML developers. To unsubscribe, mailto:majordomo@x...&BODY=unsubscribe%20xml-dev List archives are available at http://xml.org/archives/xml-dev/ ***************************************************************************
|
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|