Answer Posted / venkatesh.layam

when ever compiling time only inputbuffer will be created
while data set creation generally 3 steps been occureed
1.inputbuffer
2.pdv.
3.discription poortion
for external file:

when ever we import the external file that time input
buffer will be created.it happends in compilation phase
in the execution process the the pdv will be created
while execution 2 types of automatic variable will be
created.
_N_ :how many times datastep has been executed
_error_=by default the erroe=0 if have any errors more than
one it displays 1
data discriptior portion:in the data set column header
called data portion
and values portions called discription portion



using datalines:
when ever you use dataline for compilation and execution
directly pdv will be created but input buffer wil not be
created because only expternal data inputbuffer will be
created.

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