1991 Definition of Primary and Secondary Information Sources

Information may be categorized into primary and secondary material. If information is new and has never been published before it research, new legislation and survey results, like government is termed primary. It includes original statistics. Primary information is always up-to-date, detailed, accurate and specialized. Consequently, fewer people want to use it and it tends to be expensive. Information produced when scientists re-work primary material for a special purpose, like writing a ski...