Create the list of all professors who ever taught MAT123. The information must include all attributes available from the Professor relation.
Using the document structure described in Exercise 15.23, formulate the following queries in XQuery:
{
FOR $p IN doc("http://xyz.edu/professor.xml")//tuple
WHERE doc("http://xyz.edu/teaching.xml")
//tuple[ProfId/@value=$p/Id/@value
and CrsCode/@value="MAT123"]
RETURN $p
}
Computer Science & Information Technology
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