Checking topological integrity constraints imposed on objects in real-time databases

Checking integrity constraints in real-time databases is an important field of investigation. This paper investigates the approaches to check topological integrity constraints depending on objects select a different integrity constraint on different times for many existing constraints. The topological integrity constraints are order Hamiltonian paths in directed graphs. Moreover, in a fixed period of time objects must satisfy topological integrity constraints imposed on them. First, it reviews several approaches of some researches. Second, it proposes a procedure to find out the integrity constraints that are installed on a directed graph, it also proposes a check procedure an object satisfies a sequence of integrity constraints in real-time yet? Third, it constructs a method on checking integrity constraints by transition graphs. Finally, it presents the procedures to check integrity constraints, and implements these procedures in real-time school databases.