What is different between the data warehouse and data mart?
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I have source like this 1:2;3. so i want to load the target as 123
delete data from staging table as it loads to target table.here is the case we are getting data from 3 different server.a b and c.the data from server A loaded into staging table and we ran the task and data loaded to target table.now today data from server B and C also got loaded to the staging table.now what techniques and what transformations should be used to delete only the data which has been loaded only to the target.we need to delete only that data from staging which has been loaded into the target.looking for your responses
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1)can anyone explain how to use Normalizer transformation for the following scenario Source table | Target Table | Std_name ENG MAT ART | Subject Ramesh Himesh Mahesh Ramesh 68 82 78 | ENG 68 73 81 Himesh 73 87 89 | MAT 82 87 79 Mahesh 81 79 64 | ART 78 89 64 | please explain what should be the normalizer column(s) The GCID column 2)Also please explain the Ni-or-1 rule.
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