It covers literature that makes a definite contribution to knowledge in the subject areas of engineering and applied science. About half the citations (from 2600 journals and conferences) include abstracts and indexing in the records. Online coverage is from 1884 to the present, and files are updated weekly. The highest percentages of journal literature are in the fields of chemical and process engineering (15%), computers and data processing (12%), applied physics (11%), and electronics and communication (12%) In addition Compendex includes civil engineering (6%) and mechanical engineering (6%).
CompendexWeb is the most comprehensive bibliographic database of engineering research literature, containing references to over 5000 engineering journals and conferences.