Signs and Symptoms of Substance Abuse. From the American Council for Drug Education, an affiliate of Phoenix House. The following are some of the more common signs and symptoms of drug use. It is important to keep in mind that if a person has any of these symptoms, it does not necessarily mean that he or she is using drugs. They could be due to a mental or physical health problem.
The main difference between data and information is that data is raw material that is to be processed and information is the processed data. Comparison Chart Basis of Distinction
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.