[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

RE: When maxOccurs=1 means an unbounded number of occurrences isvalid

  • From: "Costello, Roger L." <costello@mitre.org>
  • To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>
  • Date: Tue, 21 Nov 2017 13:47:37 +0000

RE: When maxOccurs=1 means an unbounded number of occurrences isvalid

Hi Folks,


Here is more context to my post. I am reading the vCard RFC. (https://tools.ietf.org/html/rfc6350)  The RFC specifies number of occurrences this way:



    | Cardinality | Meaning                                          |


    |      1      | Exactly one instance per vCard MUST be present.  |

    |      *1     | Exactly one instance per vCard MAY be present.   |

    |      1*     | One or more instances per vCard MUST be present. |

    |      *      | One or more instances per vCard MAY be present.  |



I interpreted that table this way:


Cardinality =   1 means: minOccurs=1 and maxOccurs=1

Cardinality = *1 means: minOccurs=0 and maxOccurs=1

Cardinality = 1*means:  minOccurs=1 and maxOccurs=unbounded

Cardinality = * means:    minOccurs=0 and maxOccurs=unbounded


Do you agree?


The RFC says this interesting thing: Elements with the same altid (alternative identifier) don’t count toward cardinality.




[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.

Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.