When using IDA, I can press x on any subroutine to see where it is called from. Eventually I end up in the .data section. But, what am I looking at when I get to this point ? Are these exports offered by the .dll that I'm looking at ? And, if I get to this point, is it safe to assume that there are no other calls to my function (with the exception of dynamically-generated and/or external calls) ? See reference image below for context.
IDA and XRefs in the .data Section
ida;disassembly
It's hard to tell without more context, but you're probably looking at a virtual function table (vtable). See Converting a virtual table from .rdata into an IDA struct for an example.