It is operational data store. ODS is a BW Architectural component that appears between PSA ( Persistant Staging Area ) and infocubes and that allows Bex ( Business Explorer ) reporting. It is not based on the star schema and is used primarily for details reporting, rather than for dimensional analysis. ODS objects do not aggregate data as infocubes do. Data are loaded into an IDS object by inserting new records, updating existing records, or deleting old records as specified by RECORDMODE value. *-- Viji
1. How much time does it take to extract 1 million of records from an infocube?
2. How much does it take to load (before question extract) 1 million of records to an infocube?
3. What are the four ASAP Methodologies?
4. How do you measure the size of infocube?
5. Difference between infocube and ODS?
6. Difference between display attributes and navigational attributes? *-- Kiran
1. Ans. This depends,if you have complex coding in update rules it will take longer time,orelse it will take less than 30 mins.
3. Ans:
Project plan
Requirements gathering
Gap Analysis
Project Realization
4. Ans:
In no of records
5. Ans:
Infocube is structured as star schema(extended) where
in a fact table is surrounded by different dim table which connects to
sids. And the data wise, you will have aggregated data in the cubes.
ODS is a flat structure(flat table) with no star schema
concept and which will have granular data(detailed level).
6. Ans:
Display attribute is one which is used only for display
purpose in the report.Where as navigational attribute is used for drilling
down in the report.We don't need to maintain Nav attribute in the cube
as a characteristic(that is the advantage) to drill down.
*-- Ravi
Q1. SOME DATA IS UPLOADED TWICE INTO INFOCUBE. HOW TO
CORRECT IT?
Ans: But how is it possible?.If you load it manually
twice, then you can delete it by request.
Q2. CAN U ADD A NEW FIELD AT THE ODS LEVEL?
Sure you can. ODS is nothing but a table.
Q3. CAN NUMBER OF DATASOURCE HAS ONE INFOSOURCE?
Yes of course. For example, for loading text and
hierarchies we use different data sources but the same infosource.
Q4. BRIEF THE DATAFLOW IN BW.
Data flows from transactional system to analytical system(BW).
DS on the transactional system needs to be replicated on BW side and attached
to infosource and update rules respectively.
Q5. CURRENCY CONVERSIONS CAN BE WRITTEN IN UPDATE RULES. WHY NOT IN TRANSFER RULES?
Q6. WHAT IS PROCEDURE TO UPDATE DATA INTO DATA TARGETS?
Full and delta.
Q7. AS WE USE Sbwnn,SBiw1,sbiw2 for delta update in LIS
THEN WHAT IS THE PROCEDURE IN LO-COCKPIT?
No lis in lo cockpit.We will have data sources and can
be maintained(append fields).Refer white paper on LO-Cokpit extractions.
Q8. SIGNIFICANCE OF ODS.
It holds granular data.
Q9. WHERE THE PSA DATA IS STORED?
In PSA table.
Q10.WHAT IS DATA SIZE?
The volume of data one data target holds(in no.of records)
Q11. DIFFERENT TYPES OF INFOCUBES.
Basic,Virtual(remote,sap remote and multi)
Q12. INFOSET QUERY.
Can be made of ODSs and objects
Q13. IF THERE ARE 2 DATASOURCES HOW MANY TRANSFER STRUCTURES
ARE THERE.
In R/3 or in BW. 2 in R/3 and 2 in BW
Q14. ROUTINES?
Exist In the info object,transfer routines,update routines
and start routine
Q15. BRIEF SOME STRUCTURES USED IN BEX.
Rows and Columns,you can create structures.
Q16. WHAT ARE THE DIFFERENT VARIABLES USED IN BEX?
Variable with default entry
Replacement path
SAP exit
Customer exit
Authorization
Q17. HOW MANY LEVELS YOU CAN GO IN REPORTING?
You can drill down to any level you want using Nav attributes
and jump targets
Q18. WHAT ARE INDEXES?
Indexes are data base indexes,which help in retrieving
data fastly.
Q19. DIFFERENCE BETWEEN 2.1 AND 3.X VERSIONS.
Help!!!!!!!!!!!!!!!!!!!Refer documentation
Q20. IS IT NESSESARY TO INITIALIZE EACH TIME THE DELTA
UPDATE IS USED.
Nope
Q21. WHAT IS THE SIGNIFICANCE OF KPI'S?
KPI’s indicate the performance of a company.These are
key figures
Q22. AFTER THE DATA EXTRACTION WHAT IS THE IMAGE POSITION.
After image(correct me if I am wrong)
Q23. REPORTING AND RESTRICTIONS.
Help!!!!!!!!!!!!!!!!!!!Refer documentation
Q24. TOOLS USED FOR PERFORMANCE TUNING.
ST*,Number ranges,delete indexes before load ..etc
Q25. PROCESS CHAINS: IF U ARE USED USING IT THEN HOW WILL
U SCHEDULING DATA DAILY.
There should be some tool to run the job daily(SM37 jobs)
Q26. AUTHORIZATIONS.
Profile generator
Q27. WEB REPORTING.
What are you expecting??
Q28. CAN CHARECTERSTIC CAN BE INFOPROVIDER ,INFOOBJECT
CAN BE INFOPROVIDER.
Of course
Q29. PROCEDURES OF REPORTING ON MULTICUBES.
Refer help.What are you expecting??.Multicube works on
Union condition
Q30. EXPLAIN TRANPORTATION OF OBJECTS?
Dev ---> Q and Dev ---> P
*-- Ravi
