Bio-Data: consists the information about the individual and his attributes, hobbies, interests along with educational qualification to describe the person the best.
Resume: is a one or two page “Summary” of your skills, experience and education. Generally no more longer than a page or two. It indicates candidate’s professional qualification.
CV: A Curriculum Vitae is a longer and more detailed synopsis. Generally over a couple of pages long. It indicates candidate’s professional experience.