What are constraints and derivations?


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i have data like sam ram sam raj ram I want two targets trgt1 ram sam trgt2 raj how can i do this in datastage?

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In my previous project we get data from mainframe and load it into datastage DB2 tables.Sometimes we get data as flat file or a mainframe tables itself directly we fetch the data.Is this a migration project?

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what is a message handler

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why we use parameters instead of hard code in datastage

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1)How will u implement SCD2 by using surrogate key. 2)What are the disadvantages with surrogate key. 3)How will you handle nulls in your project for the varchar, integer data types. 4)Can I use two fact tables in star schema. 5)3 jobs are running on the 2 nodes after I added one more node so can I compile those jobs to run on three nodes.

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