One of the main citation databases (CDB)in the world are SCI-E in the field of natural and applied scientific disciplines, SSCI in the field of social scientific disciplines and A&HCI in the field of art and humanitarian scientific disciplines. For 2015 year, within SCI-E all scientific areas of social scientific disciplines are classified in 177 categories, and within SSCI all scientific areas of social scientific disciplines are classified in 57 categories. In the paper is given an attempt to explain all of the citation databases, to describe the ways for determining Journal Impact Factor (JIF) and to list other bibliometric indicators for the assessment of journals, states, regions, universities, faculties, departments and individuals. Further on, trend analysis is given for number of journals (NoJ) for five different categories: "Economics","Law", "Psychiatry", "Psychology, Experimental", and "Social Work". within SSCI for period of 1995-2015. Highest increase of number of journals for period of 1995-2015 for five listed categories within SSCI had, also, category "Economics" with chain growth index (CGI) of 242,96%.
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