Input XML - DB - Output XML

Question

I have been able to get Liquid Data up and running.
I have set my Output XSD as the target schema
I have included my DB and mapped it to the Output XSD
I am having problems getting the Input XML into my project. When I include in my XML source (input xsd) it does not show all the elements....
My bigger question is, can I through Liquid Data, map an input XML file to a DB (run sql to match up XML element value and DB table values) and export the SQL recordset to my defind XML file?
I started down this road based on a 'yes' answer from a
peer.
Spending a little more time than I had hoped on this one...
I need to do this below..
<Membership_ID>000001</Membership_ID> //Input XML
...db....
Select * from Member_Table where XML.Membership_ID = Member_Table.Memb_ID
...db....
Insert Into Pre-Defined XML.....
<Memb_F_Name>Elvis</Memb_F_Name>
<Memb_L_Name>Costello</Memb_L_Name>
<Memb_City>Miami</Memb_City>
<Memb_Age>50</Memb_Age>
<Memb_ID>000001</Memb_ID> //Makes Hit On This
Making progress but, any examples would be great...
TIA
Jay

Answer 1

to use an xml file as a datasource, create an XML File Datasource in the LD Console (you need to specify a schema there). Go to the DataView Builder, reconnect to the server, it will show the XML File source with all the elements defined in the schema.
To compare values with a db against values in a file, you need to defined an LD rdbms source for the db and an LD XML file source for the file.
Then write your xquery - it will look something like...
for $file_rec in document("MyFileSource")
for $db_rec in document("MyDBSource")
where $db_rec/Member_id eq $file_rec/Member_id
return
$db_rec