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See here the interview question related with Data Science. Data science is a multidisciplinary blend of data inference, algorithmm development, and technology in order to solve analytically complex problems.
At the core is data. Troves of raw information, streaming in and stored in enterprise data warehouses. Much to learn by mining it. Advanced capabilities we can build with it. Data science is ultimately about using this data in creative ways to generate business value. Make your career in data science.