what is pdv? how it is related to input buffer in sas?
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Answer Posted / vera royzman
Program data vector (PDV)is a logical area in memory where
SAS builds a data set, one observation at a time. When a
program executes, SAS reads data values from the input
buffer (a logical area in memory into which SAS reads each
record of raw data when SAS executes an INPUT statement) or
creates them by executing SAS language statements. The data
values are assigned to the appropriate variables in the
program data vector. From here, SAS writes the values to a
SAS data set as a single observation. When the DATA step
reads a SAS data set, SAS reads the data directly into the
program data vector.
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