Bachelor's degree
Until the 19th century, a bachelor's degree represented the first degree in a particular faculty, with Arts representing undergraduate study, thus the Bachelor of Civil Law (BCL) at Oxford and the Bachelor of Laws (LLB) at Cambridge, for example, were postgraduate degrees. Vestiges of this system still remain in the ancient universities, with Oxford and Cambridge awarding BAs for undergraduate degrees in both arts and sciences (although both award undergraduate BTh degrees through associated theological colleges, and Oxford awards BFA degrees in addition to the BA) and defining other bachelor's degrees (e.g. BPhil, BCL) as postgraduate awards equivalent to master's degrees, although many postgraduate bachelor's degrees have now been replaced by equivalent master's degrees (e.g. LLM for the LLB at Cambridge and MSc for the BSc at Oxford). The same historical usage of indicating an undergraduate degree by it being in the faculty of arts rather than being a bachelor's degree gives rise to the Oxbridge MA and the Scottish MA).
Magister degree
After the Bologna process, previous undergraduate education has been reformed. Current students that are in a 3- or 4-year Bachelor program and 1–2 Master program have to complete PhD requirements before writing their dissertation. They have to complete the coursework and pass preliminary exams. Students with Magistar degree have no such requirements. They have to do the research only related to the dissertation. Some universities which retained the Magistar (e.g. University of Zagreb) use it as a pre-postgraduate studies qualification.