Can't find Source code

My programmer who has been updating my software has left unexpectedly and I'm unable to contact him. Could the source code be located in my domain/database? Does anyone have suggestions on where to look for it (and how it's supposed to look like)?

That is a bit broad... What language is the program written in? And are you on Windows, Linux, Mac or something else?

since you are referring to domain its probably a php bot
you can locate the source code via ftp

if its a php or any other scripting language program you can just open it and edit source code just download a code editor and open it from there

It's hard to tell, do you have any idea on what programming language those programs are written? from what you are saying 'domain/database' you must be referring to it's database.

if it's on localhost. you can find those database using a browser. Go to 'localhost/phpmyadmin' and from there, you shall see all the database.

If your software is a web, and i'll assume it's written with php, you can go to 'C:\wamp\www' on your computer, from there, you can find all the websites that you have locally.

hope this helps. Goodluck.

If he send you just .exe file to download from a website there is no way you can find the source code.