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DataSource is file then DSO and if DS is R/3 then CUBE ?

Hi Team ,

Though may be this is discussed earlier but no where explained ,

I know DSO maintains 3 tables (NDT,ADT,CLT) and in Change Log Table it maintains the images (NEW,BEFORE,AFTER) and used for storing modified data.

In ACTIVE DATA TABLE data gets overwritten .

my doubt is why we load data first in DSO and then TO CUBE ? why cant directly in cube ?

is it because CUBE adds up the data ?


1ST COLUMN :CUSTOMER NUMBER

2ND COLUMN : MATERIAL NUMBER

3RD COLUMN : PRICE

4TH COLUMN : QUANTITY

5TH COLUMN : REVENUE (PRICE*QUANTITY)

FILE........................................>DSO (IMAGES)...............................>CUBE

1st load (new data): C1 M1 100 2 200...........>C1 M1 100 2 200 'N'..............>C1 M1 100 2 200


2nd load(modified data) : C1 M1 100 5 500 .........>C1 M1 -100 -2 -200 'X'...............> C1 M1 0 3 300(100-100 = 0,5-2 = 3,500-200 )

>C1 M1 100 5 500 '-'



NOW IN CUBE DATA ADDS UP , HENCE 1ST LOAD PLUS 2ND LOAD = C1 M1 100 5 500



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3 Answers

  • Posted on Dec 10, 2014 at 06:26 AM

    Hi,

    Data LoadKeyKey figure1M11002M1200

    If you load the above data one after another separately.

    In DSO Active table;

    KeyKey figureM1200

    In DSO change Log Table;

    KeyKeyfigureM1100M1-100M1200

    In cube;

    Data is loaded from change log to table.

    Keyfigure = 100+(-100)+200 = 200

    CharacteristicKeyfigureM1200

    -Sriram

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  • Posted on Dec 10, 2014 at 06:10 AM

    Hi Priya,

    have you gone through various documents present on google.

    search with "diffrence between DSO and cube" you will get very good docs.

    please read it.

    Mainly DSo is 2D table structre and cube is based on concept of extended strt schema.

    Regards,

    Ganesh Bothe

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  • author's profile photo Former Member
    Former Member
    Posted on Dec 10, 2014 at 07:56 AM

    HI Priya,

    Its not at all like that...file data to DSO & R/3 data to cube.

    But its true that info cube has additive property, so if u want to sum up the values on certain characteristic conditions, then you need to load it to cube. But if u want to keep the records as its is & not get added up then you have to use DSO, here also in the DSO the records get added up based on the DSO Keys. So you can adjust the keys accordingly & get the results.

    But beyond all these its a better practice/architecture to load the DSO first & then to the Cube.

    BR,

    Shreesh.

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    • Former Member priya ramani

      Hi Priya,

      DSO is used in the flow where we are getting final image of record

      while Cube is used where we get the additive image of records.

      Ex.

      In ECC

      Doc num X is created with value 100 on 1st oct. Now the same document is changed to value 200 on 10th Oct

      if your Datasource output is like below

      On 1st oct

      on 10th oct

      and you need to store only final value as ECC table is also contains final value then you need to use overwrite concept of DSO

      But if your Datasource sending below informations

      on1st

      on 10th

      additive 100 value not 200 value

      then use Cube.

      this is very simple example for you to understand the diff.

      Regards,

      Ashish

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