I need to create installer msi file which will pack application files ( like dll, exe, resources) and copy to destination. Also I need to copy database to installation destination.The size of database is 4 G and I cannot pack it inside msi file. So I need to take external zipped database and copy to destination. I was able to use CopyFile element to copy zipped file to destination but I have an issue to unzip it there. I will appreciate if you can let me know how can I copy external zip file (zipped Data Base) to target directory and unzip/extract them with Wix?