Hi Girdhari,
you cannot display ZAN_MAT with the standard tools refers to "SE11/SE16".
You can have a look at the external view using the ABAP Development Tools (aka ABAP in Eclipse), which basically shows you the external view again (same as when you created it). And you can query it using a tiny report with just the SELECT * from ZAN_MAT ... and display the data, e.g. via an ALV.
Cheers,
Jasmin