Engineering is the inventive application of science, mathematical techniques. It includes the innovation, design, construction and maintenance of buildings, machines, materials, devices, systems, processes, and organizations. Within that field, there are two types of engineering: forward engineering and reverse engineering. Let us see about each of them and their difference: Forward engineering: It is a traditional form of engineering. This branch of engineering follows the logical path to make designs of mechanical products. Engineers and designers come up with new design ideas, then moving on to create a prototype, then finally create a product. Reverse engineering: The opposite of forwarding engineering is reverse engineering. Here the already constructed building is analysed and deconstructed. Once the design of the original building is optimized, it is again re-manufactured.  The advantages of reverse engineering have opened the door for exploring data of com