Can i connect with Access database or Sql Database on DropBox web cloud with Vb.Net - Desktop App؟ what a connection String ?

we can connecting sql or Access on dropbox:

Filefile= newFile(getDatabasePath("my_database").getPath());file.getParentFile().mkdirs();FileOutputStream outputStream = new FileOutputStream(file); 

DropboxFileInfo info=dbInstance.getFile("/BackupFolder/my_database",null,

outputStream,null);