PK: UserID
FK: CoachID
Name, HabitNum
PK: CoachID
Name
PK: UserHabitID
FK: UserID, HabitID
PK HabitID
HabitName
PK: HabitCheckinID
FK: HabitID, UserID
CheckinDate
PK: CommentID
FK: HabitCheckinID, UserID, CoachID
CommentDate, CommentText
PK: HabitID
by tortel
