- From: Michael Kay <mike@saxonica.com>
- Date: Sat, 5 Jan 2008 16:09:51 -0000
- To: "'King, Jeffrey \(Mission Systems\)'" <Jeff.King@ngc.com>, <xmlschema-dev@w3.org>
> However, I am > wondering that if XML Schema 1.0 does not support it, then > maybe it's trying to tell me it's not good approach. Are > there any reasons (other than XML Schema 1.0 does not support > it) why using the design I presented below is poor? One can't say that something is poor design without knowing the design objectives. One of the main reasons for using what I call "meta-level markup" is that it allows you to have highly variable data within the constraints of a fixed schema. For example, you can have a wide variety of documents of the form <table name="xyz"> <headings> <column>a</column> <column>b</column> </headings> <row> <cell>1</cell> <cell>2</cell> </row> <row> <cell>10</cell> <cell>20</cell> </row> and they all have the same schema; whereas if you use conventional markup <xyzs> <xyz><a>1</a><b>2</b></xyz> <xyz><a>10</a><b>20</b></xyz> then each document needs its own schema. You seem to be trying to use meta-level markup together with a document-specific schema, and that's not a combination that works especially well. Michael Kay http://www.saxonica.com/
Received on Saturday, 5 January 2008 16:10:06 UTC