This app is a "Content Provider", which provides contents to other apps. This can not provide anything directly to users directly.
The database file is not contained in the application package because it is too large (5.3MB). At first, please download the database file from the net. Selecting "Download" in the preference of this app opens the Download Page by a web browser. Then, specify the path of the downloaded file at "Path of database".
※The files named ".bz2" and ".zip" are compressed files. de-compress them before use. If you can not it, download the raw database file. (All of them are same.)
※The default browser can not download files when no apps to open them are installed. I recommend to use other browser, such as "Dolphin Browser", "Opera mobile".
※In many browsers, the downloaded files will be placed in "/sdcard/download/".
※You can download on PC, then copy to SD card in the device.