digraph {
     User [shape=box];
     VerifyingInformation [shape=box];
     AttachFile [shape=box];
     CheckDeadline [shape=box];
     SendTo [shape=box];
     Database [shape=box];
     Instructor [shape=box];
	User -> VerifyingInformation [label = "Username and Passward"];
	VerifyingInformation -> AttachFile [label = "Verified Information"];
	AttachFile -> CheckDeadline [label = "file"];
	CheckDeadline -> SendTo
	SendTo -> Database
	SendTo -> Instructor
}
