Until the second half of the XX Century, information was destined to be understood, developed and transformed by the powers of the human mind. It was externalized by means of different languages and codes (the letters of the alphabet, the combination of colors, musical notes, etc.) and were supported by various material bases (paper, photosensitive film, magnetic tape, etc.).
The technological progress in Information Technologies and computer networks in the recent decades increases by the day and plays an increasingly important part in various aspects of human activities. The use of electronically transmitted data has permitted newer and efficient ways of rendering services to the population, such as: e-commerce, services provided by different governmental agencies, information systems and databases among others