internal table as a datatype.....

Hi Friends,

Can we declare an internal table in an other internal table as a field(part) of that?....

for eg:

data: begin of material_Data occurs 0,

vendor_na like lfa1-name1,

matno like mara-matnr,

...........................,

..........................,

begin of base_measures,

weight(15) like mara-brgew,

vol(12) like mara-volum,

end of base_measures,

sales_org like mvke-vkorg,

..........................,

end of material_Data.

in the above example, is the <b>base_measures</b> another internal table or not.............

plz clarify this........

thanks in advance.....

raj