XSD Problem

[matt cole]

Hi, I'm pretty much a newbie to xsd's in general, and have a case in a schema I'm designing that I'm not sure how to solve. Basically I have a situation like this: Standard Special where the parent node type is the same, but depending on the value of the category node, subsequent nodes are different. I thought a good solution would be to have a xs:choice, where each choice has a fixed value for the category node and then the relevant subsequent nodes follow but I get a Unique Particle Attribution violation as both choices have the category node. Is there a solution for this type of situation or will i have to workaround it somehow? Thanks very much, Matt

[Chetan Ranpariya]

I have Xml File like the follwing : 1220200054 Chetan Ranpariya IT Ahmedabad and I had a .xsd file for that in which I set the datatype for "RegNo" as "long" and set it as a primary key column. Now problem is when ever I tried to ented text data int RegNo the error is given. It's Ok. But if I enter duplicate value in RegNo field then it does not give any error and accepts data. So how can I make primary to work like in sql, and access. Can any one help me? Thanks in advance for help. Chetan Ranpariya