Missing database.php

please give me the details about database.php

It seems you didn’t followed the installation instructions.
Please take a look at this: http://wiki.invoiceplane.com/en/1.0/getting-started/installation

that link is not working

can give me please share the details sunil.innovinit@gmail.com

Try the following link: https://wiki.invoiceplane.com/en/1.0/getting-started/installation
That should get you to the Installation section of the Wiki

hi evelio ,
thanx for the reply
but i want database.php this file i am already downloaded

You can’t download a database.php, you have to run the setup and this file will be created automatically.