[jolinar]

Hi,
I have a context-free grammar and I should set up a XML hierarchy from it. The thing is, I'm not sure I'm doing it right, so I'd appreciate anyone's input.

The pseudo-grammar:

<Q> -> SELECT element <LIM> FROM <FRM> <WH> 
<LIM> -> empty
<LIM> -> LIMIT number
<FRM> -> element
<FRM> -> BOOL
<WH> -> WHERE <EL> <ROP> <N>
<N> -> number
<EL> -> element
<ROP> -> CON
<ROP> -> =
<ROP> -> >

My XML schema

<Q>
  <SELECT>
    <LIMIT>number</LIMIT>
    <FROM>
      <BOOL>element</BOOL>
    </FROM>
    <WHERE>
      <EL>element</EL>
      <CON> 
        <ROP> = </ROP>
        <ROP> > </ROP>
      </CON>
    </WHERE>
  </SELECT>
</Q>