A schema question

[Lin Shen]

Hi,

I want to write a schema to describe the following xml:

<A>
<B/>
<C/>
<D/>
</A>

where,

1) <B>, <C> and <D> can be listed in any order
2) <B> is optional and can occur at most once.
3) <C> is required and must occur exactly once.
4) <D> is required and can occur more than once.

thanks
lin

 

[Abhinav]

Hi,

I want to write a schema to describe the following xml:

<A>
<B/>
<C/>
<D/>
</A>

where,

1) <B>, <C> and <D> can be listed in any order

use the all construct

2) <B> is optional and can occur at most once.
minOccurs="0"

3) <C> is required and must occur exactly once.
4) <D> is required and can occur more than once.

maxOccurs="unbounded"

Check out http://w3schools.org for a gentle but useful intro to schemas.

HTH