I am going to build a bookcase out of oak faced plywood, with oak trim.

The only place where the plywood edge will be exposed is where the sides
meet the top.
Is it possible to miter them at 45, so as to have no edge showing? Will the
veneer survive a 45 cut?

I suppose the alternatives are veneering the exposed edge, or using solid
oak for the top.
I have never veneered before; how foolproof is it?