Searching similar entities in models of various subject domains based on the analysis of their tuples

This paper discusses methods to build SD models. One of such methods is constructing data domain models to meet the requirements of each individual user of the system, combining which we obtain a common conceptual system diagram. Detection of such objects in different object domains allows avoiding redundancy and inconsistency of data. The objects are suggested to be compared on the basis of the analysis of the number of connections and characteristics of the properties of objects. Methods for comparing the properties of objects differ depending on the type of scales in which their values are measured.