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Re: DTD Notation
- From: Alireza Kheyrollahi <aliostad@k...>
- To: xml-dev@l..., "Boyse, Jim" <Jim_Boyse@f...>
- Date: Thu, 08 Feb 2001 09:33:55 +0330
Title: DTD Notation
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Dear Jim,
Why take the pain to work on an obselete
technology. It was not more than a year that DTD had come and everybody was
waiting for XML Schema. And this story belongs to year 1999 !
But for the question, those two lines are not
different. Parantheses are for grouping child elements into groups. The second
line ( <!ELEMENT Test2 (ItemA, ItemB?, (ItemC)*)> )
has no groups!
Yours
Alireza Kheyrollahi
System Advance, UK
----- Original Message -----
Sent: Wednesday, July 11, 2001 5:32
PM
Subject: DTD Notation
Can someone help with a DTD notation question,
please?
I'm looking at a DTD furnished by an outside
source. In the DTD, most "optional repeating" elements are defined with
an asterisk, for example, <!ELEMENT Test1 (ItemA, ItemB?,
ItemC*)>. But a few are defined with additional parentheses, for
example, <!ELEMENT Test2 (ItemA, ItemB?, (ItemC)*)>.
What's the difference between "ItemC*" and
"(ItemC)*"?
Thanks for any insight into this (subtlety |
confusion) you can give.
--Jim
James A. Boyse
Foremost
Insurance
Group
E-Mail: boyse@f...
P.O. Box
2450
Phone: 616/956-4150
Grand Rapids, MI
49501-2450
Fax: 616/956-4450
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