\input zb-basic \input zb-ioport \iteman{io-port 00710574} \itemau{Malba\v{s}ki, Du\v{s}an; Obradovi\'c, Danilo} \itemti{CLAS -- A formal aid to data elements identification.} \itemso{Yugosl. J. Oper. Res. 4, No.2, 159-165 (1994).} \itemab Summary: The method CLAS (Continuous Logic Attribute Synthesis) is a formalization of the standard method named Synthesis of Attributes used for identification of entities and attributes in information systems design. It differs from the original method in a sense that the subjectiveness in the procedure of evaluation of parameters is eliminated by introducing formulized quantitative measures for elementary criteria. Also, the three global identification criteria which may cause a contradiction are reduced to one by the use of continuous logic functions. \itemrv{~} \itemcc{} \itemut{synthesis of attributes; information systems design} \itemli{} \end