Thats odd, Denaes. I would think of you have all the credits required for two majors then you GET two majors: Bachelor of Science in Application Development and Bachelor of Science in Database Theory - IF those are two degrees. I would bet theres just one: Bachelor of Science in Computer Science.
At my university we had "options", so you could get a BS in CompSci, Science Option or BS in CompSci, Math option.
You can also get a Major and a minor, in some areas. The credits I needed for a BS in CompSci got a math minor for example.
-ner