internal primary data definition
Data, or facts, may be derived from several sources. Data can be classified as primary data and secondary data. Primary data is data gathered for the first time by the researcher; secondary data is data taken by the researcher from secondary sources, internal or external.e shall therefore discuss secondary data first and then take up primary data. Secondary data is of two kinds, internal and external. Secondary data â whether internal or external â is data already collected by others, for purposes other than the solution of the problem on hand.