Data maintenance in mdm - Beginner ?

Hello friedns,
I'm a begginer in MDM.
Can anyone tell me,
1. How data is stored in MDM?
2. take an example, I have an R/3 system & now i'm connecting it to my MDM system and load the datas to it from R/3.so what will happen to the data? whether the dats will be replicated or it will be moved & R/3 fetches from the MDM whenever it requires data .

It's not a physical move/relocation of master data:
Once master data has been uploaded and consolidated on the Master Data Server, it is stored there as a reference object (Master Data Server Object)and a replicate (with the appropriate information) will be sent to the relevant client systems to automatically create/update master data in the client systems.
To get an overview of the process flow within Master Data Harmonization, see the Scenario Description http://help.sap.com/saphelp_mdm300/helpdata/EN/a4/69c33eb9601549e10000000a114084/frameset.htm.
Kind regards, Markus

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WE PROPOSE TXSHUTTLE AND TABLEPRO AS THE IDEAL TOOLS FOR ROUTINE SAP DATA MAINTENANCE!
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 TxShuttle runs almost any SAP transaction, simple or complex, and even custom transactions, in any SAP product or module from outside SAP. While running these transactions, TxShuttle allows easy upload of data between Microsoft Excel or Access and any SAP transaction.
 TablePro allows the easy download of any table or view from SAP into Excel files and even allows the joining of multiple tables.
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 TxShuttle and TablePro preserves complete SAP role-based security and maintain a complete SAP audit trail.
 Using TxShuttle and TablePro needs no change to standard SAP they are desktop software tools that run out of the box
Key Benefits:
 Save vast amount of time and resources in mass maintenance of SAP data.
 Make the SAP business-users and functional analysis more self-sufficient by reducing their dependence on valuable IT/IS resources.
 Save IT resources by significantly reducing custom programming efforts.
 Use the same tool for many applications. Maximize your return on investment.
Reward if useful.
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