hi Erik,
 
Finally, i managed to insert and retrieve data to and from the Oracle database.  The next thing which i find confusing is the <p: input ...> and <p: output> markups.  Thanks for your help, am new and still learning the robes of moving to a web-based approach to do things which i normally do in VC++ (heavy client).
 
Questions:
 
1.  How does the following relate to each other (in file populate.xpl) ?
 
    <p:input name="data">
            <dummy/>
        </p:input>
 
    <p:output name="output" id="dummy" debug="my-sql-result"/>
 
     Is "data" and "output" only valid within this .xpl file ? 
 
2.  What does the null-serializer do ?
   
    <p:processor uri="oxf/processor/null-serializer">
        <p:input name="data" href=""/>
    </p:processor>
3.   Why do we need the <dummy/> empty markup, both in the item 1 and also within
            the <sql: connection> ...   <dummy/>  </sql: connection>  (in populate.xpl)
 
4.   Does the "data" from populate.xpl has anything to do "data" in view.xpl ? 
Regards,
Tony
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