This is my class diagram I created for a project.

I need help with:

Determining if i wrote my multiplicty correctly.

Determing if the transition words between each class is appropiate.

Determing if all of my associations are correct.

Lastly, is it okay for USER LOGIN and ADMIN to be standing alone in a class diagram.

USER LOGIN ADMIN userlD password adminName ema +verifyLoginO +resetPassword) updatelnventory0 CUSTOMER lastName firstName address -email -creditCardInfo shippinglnfo ORDER PAYMENT 1...-orderlD dateCreated -dateShipped status subtotal Places 1paymentID + registerO + login0 +updateProfile) orderlD paymentAmount paymentDate HAS +placeOrder0) +cancelOrder() +calcPrice() +paymentApproved(0 +paymentDeclined) SHOPPING CART cartID productlD SHIPPING INFO nglD ingType ngCost -dateAdded +addCartltem() +updateQuantity0 +viewCartDetails0) +checkout) +updateShippinglnfo0) +trackShipment(0) PRODUCT INVENTORY productID productName quantity unitCost inventorylD inventoryltem +inventoryAvailable0 0..-inventoryDescription Updates +inventoryUnavailable0)