Integrity control in mandatory DP-model of DBMS MySQL

The paper reports on mandatory integrity control mechanisms elaborated for mandatory DP-model of DBMS MySQL. The elaboration is aimed at data protection from improper modification. It allows avoid information flows from entities of lower integrity level that modify entities of higher integrity level. The paper provides new elements introduced for mandatory integrity control, describes some rules of system transformation, defines the notion of state without integrity violation and gives a necessary condition for the system to stay in this state.