a unit cell which do not contain any interior point is called primitive unit cell.and a unit cell which contain extra lattice point not at corners is called non primitive unit cell.
A primitive data type is one that fits the base architecture of the underlying computer, such as int, float, and pointer, and all of the variations thereof, such as char, short, long, unsigned,...
A primitive variable can be one of eight types: char, boolean, byte, short, int, long, double, or float. Once a primitive has been declared, its primitive type can never change, although in most...