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
3 Answers
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Posted on Dec 10, 2014 at 06:26 AM
Hi,
Data LoadKeyKey figure1M11002M1200If you load the above data one after another separately.
In DSO Active table;
KeyKey figureM1200In DSO change Log Table;
KeyKeyfigureM1100M1-100M1200In 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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Former MemberPosted on Dec 10, 2014 at 07:56 AMHI 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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2 Comments-
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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