Finally, for easy and professional deployment, the Code Generator creates Wix files also to allow deployment of the application. All the files required for basic deployment are included in the MSI file. You can add any number of extra files too if needed.
Actually there are two MSI's created whenever you create installer. One is for 32 bit deployment and other for 64 bit. This is partuclarly required for Firebird which has separate drivers for 32 bit abd 64 bit platforms.