The sector which involves knowledge oriented activities can be classified into Quaternary and Quinary activities.
Quaternary activities refer to the research and development activities which require advanced technical and competence skills and knowledge. These activities involve the collection, production and dissemination of information.
It can be well understood that more than half of the working population of the economically developed countries are in the Quaternary sector. These quaternary activities have become the backbone of economic development replacing the primary and secondary sectors.
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