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what is sparse lookup?
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Answer / ramya
use sparse lookup when reference database is huge i.e ratio
of input data and reference data is 1:100 or more
| Is This Answer Correct ? | 37 Yes | 7 No |
Answer / venugopal
When the reference data is more and source data is very
very less at that time we are using the Sparce lookup i.e
the ratio is 1:100
| Is This Answer Correct ? | 23 Yes | 5 No |
Answer / prasad
whenever the reference data is very huge than the primary
data then it will be problem for usig lookup stage,b'se the
data stored in buffer in lookup stage.using sparse lookup we
can perform the lookup in database level not in the
buffer,so the performance can be automatically improved...
| Is This Answer Correct ? | 5 Yes | 1 No |
Answer / chenna
sparse lookup has more memory so that if reference table
contains huge amount of data perfer to use sparse lookup
| Is This Answer Correct ? | 3 Yes | 4 No |
Answer / ananda
Join: When volume of data is more than 10 million in both
source and reference link.
Sparse Lookup: When reference data is > 500 million and
source data is <10 million.
| Is This Answer Correct ? | 2 Yes | 8 No |
Answer / vin
If reference data is huge then we will go for join stage.
Then when we will use join and sparce is useful?
| Is This Answer Correct ? | 1 Yes | 15 No |
what is the difference between the join and look up explin me one exmple
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