I have a quick question after reading this post. My question is like we know BIX is mainly used to extract the data from BLOB. For that only, we buy this product but when I saw this post then I am little confused on the purpose of BIX. I think we can write our own logic to extract the data from a non-BLOB column table without using BIX tool, right? With a curiosity I am asking this question. Please don't think otherwise.
You can extract data from external tables. But if you are using "Use last update date time as start" option, then pxCommitDateTime column is used to restricts the records that need to be extracted. With 7.2, we have now introduced a new symbolic called "Last Extraction Time" which can be used in the filter conditions of the extract rule instead of the checkbox. This can be applied to any date time property.