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Virtual InfoCube Modeling

Hi, I am going to use a Virtual InfoCube over a Custom Z Table. My Z Table has a Time Stamp field, but not the individual Time Characteristics like 0CALDAY, 0CALMON, that users will select on. Should I include these in the ZTABLE so they don't have to be resolved at runtime or should I just determine them from the timestamp at Runtime? What do you think is the best approach?


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    author's profile photo Former Member
    Former Member
    Posted on Oct 23, 2006 at 01:57 PM

    If the logic is this, you can determine them from the timestamp at runtime without putting fisical fields on ztable.

    Hope it helps.


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    • Former Member

      If you have control over the ZTABLE then into the ZTABLE - anything to minimise the IO at run time is preferable

      Of course you can derived the cal day by doing a look up and IF statements - but it's all extra IO

      I do all derviation in Virtual cubes on the R3 function moudle or changing the source data (if I have control over it) - rather than any data in BW

      That includes denormalising the structures coming down - so design is column based rather than row based - thus the number of packets txf at run time is small

      I tend to do all calculations up front as well

      You are looping around the itab in the function module anyway before popluating the output table - do as much in there as possible - if you do it in BW you are only going to loop around again

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