Answer Posted / hari
This is mainly useful for the fast retrival of data (For ex
we have 559 in 1 lac obs then by index we can get the data
with out reading all the observations
Index are 2 type:
1.simple
2.Composite
ex-for simple
proc datasets lib=college;
modify time;
index create class;
run;
ex-for composite:
proc datasets library=college;
modify time;
index create names(=(name school);
run;
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