The presented book deals with various possibilities of systems management, DBMS databases, directly viewing documents sent to an active e-mail address by a program developed with the help of DBMS, adding reporting indicators to the database received by e-mail in Excel format by means of created links by Microsoft Outlook program and giving program examples of creating links and performing the noted operations.In addition, in order to speed up the printing of documents in enterprises and organizations discussed. A special algorithm for automating the question of placing the sum or difference of numerical elements corresponding to symbolic type elements by sub-levels at each upper level in heterogeneous matrices consisting of elements from separate categories, each category of a different level is developed, its software is given and shown.