Difference Between Normal and External Context Mapping

Hi,
I wonder the Difference Between Normal and External Context Mapping.
I1ve already read the docs and articles but I didnt understand.
Thanks,
Jorge Luiz
Edited by: Jorge Castro on Oct 9, 2008 4:23 PM

Jorge,
With this type of Mapping (also called Reverse Mapping) you can map the context of an using component, to that of the used component.
You can find an example of this concept in WDA ALV: If you look at component SALV_WD_TABLE (which you declare as used when you intend to use ALV), you'll see that it has a node DATA declared as external. In your using component, you map your actual data node to this node.
This allows the ALV to leave the DATA node type open and so to be reused, adjusting it's structure depending on the using component's data.
Edited by: Alejandro Bindi on Oct 9, 2008 4:42 PM
Made a mistake! Have not used this in a while...Ext. mapping is the OTHER way...Using -map-> Used Fixed.

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          <[email protected]> wrote in message news:3b16f1db$[email protected]..
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·        SPBT_INITIALIZE: Optional function module.
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Managing Resources in Parallel Processing
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Sequential Processing
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In Release SAP NetWeaver 7.0, the system can efficiently manage the large intermediate results produced by parallel processing. In previous releases, the system terminated when it reached a particular intermediate result size and proceeded to read data sequentially. This is no longer the case. Therefore, the RSADMIN parameter that was used in previous releases for reading a MultiProvider sequentially is no longer used.
Reward If Helpfull,
Naresh

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