Create an entity-relationship diagram diagram of the two data files regarding train rides. Use crow notation. State the primary and foreign keys.

Data File #1: date id of train ride. date of train ride, day of the week of train ride (Mon-Sun), if train ride was on holiday (Y/N)

Data File #2: id of train ride, type of train ride, summary of train ride, timestamp of train ride, date id of train ride

date id of train ride is the same column found in both files