程序代写代做代考 mc_initial_conceptual.pdf

mc_initial_conceptual.pdf

Name: Yuzhe Qin
Student ID: 29386527

City
Key City_Name

POI
Key POI_Name

Key POI_Type Resort
Key Res_ID

Manager
Key Mana_ID

Guest
Key Gus_ID

Cabin
Key Cab_Num

Key Res_ID

Charge
Key Resort_ID

Key Cab_Num

Contractor
Key cont_No

Key Res_ID

Cleanning Running Sheet

Key Res_ID

Record

Key Res_ID

Live in
Take

Have

Built

be in charge with

Have
Have

Make

is offered to

Town?

Booking?

Connect to a better entity

Connect to a better entity

CONTRACTOR_HISTORY entity???

improve keys of encircled entities