The highest degrees available in business are the Doctor of Business Administration and the Doctor of Philosophy in Business; both are doctorates, but their methodology and areas of specialization are noticeably different. In any event, the time available determines the duration; a PhD or DBA normally takes three to five years for full-time students, but up to seven years for part-time students (or working for the department in a fully-funded business PhD). Classes, on the other hand, are not required to obtain a PhD; the majority of coursework is finished in two years, or even faster with an expedited program. Furthermore, online DBA programs can significantly improve practice convenience.