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BCL) as postgraduate awards equivalent to master's degrees, although many postgraduate bachelor's degrees have now been replaced by equivalent master's degrees (e.g. LLM for the LLB at Cambridge and MSc for the BSc at Oxford).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).
Bachelor's degree
Up until 2009/2010, the system was split into three categories of degrees. There were the so-called first-cycle degrees: "Diplomado" or "Ingeniero Técnico", with nominal durations varying between three and four years; there were also second-cycle degrees: "Licenciado" or "Ingeniero" with nominal durations varying between four and six years; and finally the third-cycle degrees: "Doctor." The official first-cycle degrees are comparable in terms of duration, scope, and educational outcomes to an Anglo-Saxon bachelor's degree. Meanwhile, the second-cycle degrees are comparable in terms of duration, scope, and educational outcomes to an Anglo-Saxon bachelor's + Master's degrees combination if compared with the Anglo-Saxon system. In this traditional system the access to doctoral studies was granted only to the holders of "Licenciado", "Ingeniero" or "Arquitecto" (second-cycle) degrees, and the "Master" or "Magister" titles were unregulated (so, there coexisted so-called "Master" programs with different durations, from some months to two years, backed by universities or centers without any official recognition) and only the reputation of the program/institution could back them.