Gyan Gurukul is a software company that provides software related solution. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan Gurukul Company that provide better security also design a data abstraction for his client kataria publication, that is publisher of computer book. Assume suitable data that suits your requirement and design and explain the 3- schema architecture for the requirement.