* (asterisk) to denote a primary key field. PKs are unique and do not need to be marked with the ^ character.
@ (at sign) to denote a foreign key field. Append [table.field] if the table and field a foreign key points to is not obvious.
^ (caret) to denote a unique field that is not a primary key.

UNF:
schedule(ClassId*, Class #, Sec, Class Title, Cr, Enr, Max, Meeting Dates, Days, Time, Bldg, Rm, Instructor, Footnotes)

Table changes:
New field/table name    Original name   Description of new field/table
beginDate				Meeting Dates	First date
endDate					Meeting Dates	Second date
classmeeting			New table		Links class to multiple meetings.
day						Days			Remove plural
beginTime				Time			First time
endTime					Time			Second time
classmeetingId							New PK for classmeeting table
location								Type of location, On Campus, Off Campus, Online
Room					Rm				Room number/name.
classmeetingday			New table		Links days to class meetings.
buildingId								Unique Id for each building.
buildingCode			Bldg
buildingName							UNUSED
rmId									Unique Id for each room.
building				New table		Keeps building codes and names.
rm						New table		Keeps room number/name (and building).
instructor				New table		Keeps instructor info.
instructorId							PK for instructor.
instructorName			Instructor
courseNumber			Class #
classTitle				Class Title
course					New table		Keep course number and title.
courseId								PK

1NF:
schedule(ClassId*, Class #, Sec, Class Title, Cr, Enr, Max)
classmeeting(ClassId*@, beginDate*, endDate*, day*, beginTime*, endTime*, Bldg*, Rm*, Instructor*, location(oncampus, offcampus, online))

2NF:
classmeeting(classmeetingId*, ClassId@, beginDate, endDate, day, beginTime, endTime, Bldg, Rm, Instructor, location(oncampus, offcampus, online))

3NF:
schedule(ClassId*, courseId@, Sec, Enr, Max)	--or--	schedule(ClassId^, courseId@*, Sec*, Cr, Enr, Max)

classmeeting(classmeetingId*, ClassId@, beginDate, endDate, beginTime, endTime, rmId@, instructorId@, location(oncampus, offcampus, online))
classmeetingday(classmeetingId*@, day*(M,T,W,H,F,S,U))

building(buildingId*, buildingCode, buildingName)
rm(rmId*,buildingId@, Room)

instructor(instructorId*, instructorName)

course(courseId*, courseNumber, courseTitle, Cr)

Three data rows: