A few years ago I wrote an accounting software using that approach. The C++ code was calling predefined set of stored procedures and most logic (especially cons

A few years ago I wrote an accounting software using that approach. The C++ code was calling predefined set of stored procedures and most logic (especially constraints) was in db. Fixing bugs not related to GUI was easy and, in most cases, not visible to end users. We also had a request to let an external software to insert some data into certain tables. I just created the procedure for this particular case and guys from another company just integrated their software without any problems.