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Simply so, does data science come under information technology?

Information Science deals with using things effectively, while Data Science is about applying the scientific method. There will be significant overlap - they're both applied fields using computers.

Additionally, is Data Science hard? Because learning data science is hard. It's a combination of hard skills (like learning Python and SQL) and soft skills (like business skills or communication skills) and more. This is an entry limit that not many students can pass. They got fed up with statistics, or coding, or too many business decisions, and quit.

Also question is, is information science the same as data science?

Data science and information science are distinct but complimentary disciplines. Information science is more concerned with areas such as library science, cognitive science and communications. Data science is used in business functions such as strategy formation, decision making and operational processes.

Does data science require coding?

You need to have the knowledge of programming languages like Python, Perl, C/C++, SQL, and Java—with Python being the most common coding language required in data science roles. Programming languages help you clean, massage, and organize an unstructured set of data.