This class diagram illustrates the fundamental aspects of an ATM system, including a bank, ATM, account, card, transaction, receipt, and user. The precise relationships and interactions among these entities are represented for instance it shows how a bank has several ATMs to manage, and how one card is associated with an account while transactions take place.
The diagram describes some of the key functions like card checking, transaction processing, and receipt creation as they pertain to the ATM system's main functions.
