when we go for unconnected lookup transformation? and why?
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Answer Posted / suneel reddy
Answers 1:
Depending upon the scenario we use the conn and unconn tr..
for e.g
In u r mapping u require same lkp multiple times, creating
lkp multiple times put it in flow is not a good idea, which
occupies more cache ...
Instead of that create one unconnectes lkp use multiple
times where ever u want , which very fast..
Answers 2:
u can use conn lookup but if u need 1 row so go for unconn
lookup coz u can
use it multiple time in same mapping from multiple
expression trn.
i hope it will help to u
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