>>Then the only difference that comes to my mind is the data environment Dragan have mentioned already.
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>Curious about the DE in the SCX and the DE class. Is there a real difference? If so, what specifically makes the difference? How is the prg based DE more flexible than the SCX DE?
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>I have used the SCX DE for years and not had any problems -- but have never used the prg based DE. The only thing that I ran into on the SCX DE is the database/table paths -- but this was easily solved with a custom UDF that updates the path based on the requirements (development vs. production paths). So I am curious what is the differences/benefits....

According to MS documentation DE based tables open/load faster (how much nanoseconds difference I don't know). Other than that there shouldn't be a difference. In either case DE is not a member object but a property pointing to an object.
Cetin