Normal Lookup :-
- Normal Lookup data needs to be in memory
- Normal might provide poor performance if the reference data is huge as it has to put all the data in memory.
- Normal Lookup can have more than one reference link.
- Normal lookup can be used with any database
- Sparse Lookup directly hits the database.
- If the input stream data is less and reference data is more like 1:100 or more in such cases sparse lookup is better.
- Sparse Lookup,we can only have one reference link.
- Sparse lookup,we can only use for Oracle and DB2.
- Sparse lookup sends individual sql statements for every incoming row.(Imagine if the reference data is huge).
This Lookup type option can be found in Oracle or DB2 stages.Default is Normal.
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