Master Data Extraction-Questions

Hi guys,
I was referring SAP materials on Master Data Extraction...then I read something like...
"In Master Data Datasources,some support delta and some donot.Out of those that support delta mechanism,some use DELTA QUEUE.Some donot use DELTA QUEUE functionality and it is generally incase of small volumes of Data.Then there are some other datasources which uses ALE CHANGE POINTERS for delta mechanism."
1.Can anyone explain how can one do delta in case of small volumes of data without using DELTA QUEUE functionality?Whats the need to go for it when we have DELTA FUNCTIONALITY?
2.How to do delta using ALE Change Pointers?Whats the need to gofor this when we have DELTA QUEUE functionality?
Thanks in advance.
Regards
Schand

Hi Des,
I think you are explaining the difference between "Delta Update" and "Delta Queue".I am well aware of these two things.
DELTA QUEUE---its a temporary storage for delta records in R3 system before they are loaded successfully into BI.
DELTA UPDATE---its type of delta update of delta records from R/3 system to BI system.
My QUESTION is:
In both MasterData Datasources and Transaction Data datasources,some support delta and some donot.Usually delta records will be stored in DELTA QUEUE in ECC before uploading them into BI.But some MASTER DATA DATAOURCES,donot use DELTA QUEUE to store delta records in ECC before uploading them into BI and they do this in case of small volumes of data.then Do any of you know,how do they do if they are not using DELTA QUEUE?
Second one,SAP materials mentioned,some other datasources use ALE change pointers to determine delta.In this case also,they donot use DELTA QUEUE to store delta records before uploading into BI.What are ALE change pointers?How do we make settings for this?
Hope I explained better.
Regards
S

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