Thanks to this forum I have learned how to extract data out of DBA using queries within Excel or Access. Now I would like to learn how to take that extracted data and after making mass changes to the data, be able to use that as a source to go back into DBA.  Or I need to know that updating DBA with tables is a very complicated thing best left to only those highly experienced in SQL, Visual Basic, or whatever it is that is used for such a process.  

Thanks very much for your response.  I was hoping someone with your qualifications would reply.  Since I don't know TAS or have the compiler, getting data back into DBA is out of the question.