Creating UML class diagram for entrance system?
<p>I am looking at the entrance system of a climbing gym. The customer enters the building, gives their details to the receptionist, the receptionist enters the details into the database, verifies the details, the receptionist takes a payment if the customer is not a member and the customer proceeds inside. </p>

<p>I have four classes: customer, receptionist, administrator, database.
I have non-member and member generalized under customer.
there is a many to one relationship between customer and receptionist (many at customer end). one to one relationship between receptionist and database. one to one relationship between receptionist and administrator.</p>

<p><a href="https://i.stack.imgur.com/Ytisk.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Ytisk.jpg" alt="enter image description here"></a></p>

<p>Are my classes and relationships correct?</p>