Banking/ATM

Financial transactions generally require security and transaction-based programming. Additionally, automated teller machine (ATM) transactions require connectionless messaging. In Figure 1.13, each ATM has its own local database. Even if the local, regional, or headquarters database is temporarily offline, the ATM can still process transactions.

Figure 1.13

The following banking scenario uses these MSMQ features:

Connectionless messaging: Communication between ATMs and regional centers.
Transactional messaging: The sending and receiving of messages that occurs synchronously with the updating of the financial databases; messages are delivered only once.
Security: Ensures the integrity of the system. Would-be thieves cannot impersonate an ATM, and transactions cannot be monitored to steal account numbers and personal identification numbers (PINs).

For more information about implementing an MSMQ-based application that uses transactional messaging, see the MSMQ SDK.