while I use postgresql for ETL , I use postgresql FDW to make a database copy for further analysis in postgresql. However, if I need to do the same thing in mysql, is there any recommendation daemon for my request: The new database copy in mysql is writable, and BI engineers can make a new table without interfering the original mysql database(I mean the new table in ETL mysql won't appear in original mysql database. ) I thought a while for an answer and I didn't have a perfect one. Could anyone give me some idea? thanks for your help.