The use of relational databases MS Access, cloud-based AirTable in the breeding process showed the possibility of assessing the genetic diversity of spring barley varieties by hordeincoding loci. It is shown that using filters and queries in the database is convenient to group varieties according to hordein formulas, analyze the level of intervarietal polymorphism and internal heterogeneity in different groups of Eastern Siberian spring barley variety samples, and distinguish varieties by the frequency of occurrence of specific hordein formulas. The possibilities of integrating different databases, setting up shared access to specific research results, and importing data into spreadsheets of various formats are discussed. The results of the search for ways to transfer the database from MS Access to the PostGreSQL application recommended by the Ministry of Digital Development, Telecommunications and Mass Media of the Russian Federation are presented.