I'm new to Terdata so trying to understand the sample/qstart programs in the Teradata dir. I was looking into the qstart1, and didn't understand where definition of the OPERATOR "$FILE_WRITER" or "$LOAD" was.
Can some one please help me with that.
You mean the scripts found in Teradata\Client...? Those are examples for TPT (Teradata Parallel Transporter).
The $FILE_WRITER and $LOAD syntax describes the use of templates.
Those templates define the operators you are trying to use, and those operator definitions are found in the "templates" directory where TPT is installed.
You should see $FILE_WRITER.txt and $LOAD.txt files in that directory.