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Subject: Re: [ubl-lcsc] ISSUE: Nesting and Containership within Schema
Thanks for the info; I'm not very familiar with ASN.1. It will be great if we can create additional schema representations for the UBL Library that take advantage of expressiveness not available in XSD (they all have slightly-to-very different powers). However, since XSD is our normative schema format of record, we would need to indicate the constraint in another fashion in that case. Eve John Larmouth wrote: > You can specify that trivially if you use ASN.1 as the schema definition > notation: > > Root ::= SEQUENCE { > el1 ..... > el2 SEQUENCE { > f1 ..... OPTIONAL, > f2 ..... OPTIONAL, > f3 ..... OPTIONAL} (EXCEPT {}) OPTIONAL, > e12 ..... } > > John L -- Eve Maler +1 781 442 3190 Sun Microsystems cell +1 781 883 5917 XML Web Services / Industry Initiatives eve.maler @ sun.com
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