In stage 3 the DFDs and LDS are refined and cross validated in the light of the chosen business system option. The LDS is enhanced using relational data analysis (normalisation).
Katika hatua 3 DFDS na LDS ni kuandaliwa na msalaba Ilisahihishwa katika mwanga wa waliochaguliwa mfumo wa biashara chaguo. LDS ni kuimarishwa kwa kutumia uchambuzi kimahusiano data (kuhalalisha).