Tattoo_Artists

ArtistIDNameAgeExperienceLevel
1Alice30Intermediate
2Bob28Advanced
3Carol45Expert
4Dave67Beginner
5Eve19Novice

Piercers

PiercerIDNameAgeYearsOfExperience
1Frank3010
2Grace295
3Harry3515
4Ivy4020
5Jack478

Customers

CustomerIDNameAgePreferredServiceType
1Mary30Tattoo
2John28Piercing
3Anna45Tattoo
4Ben19Piercing
5Chris67Tattoo

Appointments

AppointmentIDServiceDateServiceTypeTattooArtistIDPiercerIDCustomerID
(→ Tattoo_Artists.ArtistID)(→ Piercers.PiercerID)(→ Customers.CustomerID)
12022-01-01 10:00:00Tattoo111
22022-01-01 11:00:00PiercingNone12
32022-01-02 10:00:00Tattoo223
42022-01-02 11:00:00Piercing334
52022-01-03 10:00:00Tattoo445