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That's why I added the RegEx Database and Files filters ;) They are very powerful once you get the hang of them.

Well, you know how these things are. If you make a very powerful feature too easy for people to use, the wrong people will use it (the people who didn't really need and understand it). It's actually easier to teach you regular expressions 101. For instance, let's say you need to include only the users table of the site. Use the following RegEx filter:

!@#__users@

Translation for humans:
! Negates the following expression, so that we are telling Akeeba Backup "exclude everything UNLESS it matches the following RegEx"
@ These are the delimiters of the expression. What goes between them is the actual RegEx
#__users That's the name of the table. The hash-double-underscore thingie there is the "abstracted" database table name prefix. This is required so that the RegEx will work no matter what your prefix is.

A similar thing if you want to include only the images/stories folder. You need this RegEx in the RegEx Files and Folders Filters page:

!@images/stories@

I believe by now you should understand how that works. The only funkiness you need to know about is how you express dots and backslashes. Dots must be "escaped" as \. (backslash-dot) and backslashes must be abstracted as \\ (double backslash).

That concludes the crash course to practical RegEx for use with Akeeba Backup Professional. Go do something amazing :)

You're welcome!