No, a certificate course and diploma degree is not same. A certification course gives you an overview of the total course. Candidates who earn their certificate in fashion design can proceed onward to a variety of career options in the fashion industry. Certification course does not make you a graduate.
On the other side, diploma course is a undergraduate course. With a Diploma in Fashion Design, graduates can find employment as brand managers, patternmakers, product development, designers and assistant designers, costume designers, fashion journalists, or as a fashion coordinator for television, movies, or magazines.