Information and geoinformation systems dichotomous stratification

System stratification is constructing its structure method in the connected layers form. Stratification is often used as a classifying or obtaining homogeneous sets method from a heterogeneous sets collection. The article examines the systems qualitative features classified according to the trinitarian dichotomy scheme. The dichotomy is based on identifying and contrasting the qualitative features of the system under study and the subsystem. The article describes the information and geoinformation systems dichotomous division basic principles using the Trinitarian opposition dichotomy principle. In a geographic information system, stratification is used additionally when organizing data. The article describes the parsing tree used in the dichotomous complexity analysis. A method for determining the system qualitative characteristics strata is shown. A criterion for assessing the system complexity is given. An information system dichotomous analysis principle application is shown on a specialized geographic information system example for maintaining an address register.