It is proposed to use a dynamic dictionary as a means of extending standard C++ data structures. The dictionary is implemented as a complex data structure represented as a class. The use of statistics of words that are divided into nodes in the data structure allows us to significantly expand the range of tasks to be solved. An approach in which data is presented in the form of a dictionary and for which functions are used. A description of dictionary functions is given and examples of tasks solved based on dictionary technology are given. The capabilities of the dictionary technology for storing and accessing data were used to build a model of a post-relational database management system.