Diploma In Engineering In Interior Design and Decoration is a Diploma level course. Duration of this course is 3-year long and it provide on part-time basis by various institutes. It is a practice related to anything that is found inside a space doors, finishes, textures, walls, windows, light, furniture and furnishings. This course is offered by many colleges or universities in their campus on part-time basis. Space doors, finishes, textures, walls, windows, light, furniture and furnishings