7. Code:

	DBMS files:
		Btree.h
		Btee.C
		Database.h
		Database.C
		Datafile.h
		Datafile.C
		Indexfile.h
		Indexfile.C
		Key.h
		Linklist.h
		
	Registration Application files:
		Registration.C
		Course.h
		Course.C
		Student.h
		Student.C