how u know when to use a static cache and dynamic cache in
lookup transformation.
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Answer Posted / hari
By default lookup is static.
Dynamic is used whn the records coming frm the source to
target in multiple times. i.e if
1)
emp_id=101...city=hyd...age=25...
(first this is inserted to target)
2)at second time when 101 employee is changing his city frm
hyd to chennai here we need to update the target table with
city name as chennai. thn how lookup cache knows tht a
record is updated...
3) if it is static lookup, after updating tht record it
will not refresh the lookup cache.... where as if it is
dynamic cache it will refresh the cache....
4) Based on our requirement we r going to use.....
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