The SSIS developer documentation is brief, as you know, and I searched Google for the answer to this question ...
What is the MappedColumnID property (available for input, output, and external metadata columns)? He seems to be doing nothing.
Perhaps, to rephrase the question ... how to achieve mappings between metadata columns and I / O columns? I know about the ExternalMetaDataColumnID property ... but then how / where does the MappedColumnID come into play?
In addition, components, such as OLEDB assignment, have a column mapping editor that is displayed both in the component user interface and in the advanced editor. How is this achieved?
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