Which concept relates to the ability to handle multiple transactions simultaneously?

The concept of process concurrency refers to the ability of a system to manage multiple transactions at the same time. In environments where multiple processes or transactions can be initiated by users or systems, such as in an application built using Appian, process concurrency ensures that these simultaneous transactions do not interfere with each other, allowing for efficient and smooth operations.

When process concurrency is effectively implemented, it allows for high-throughput and responsiveness within applications, enabling users to perform actions without waiting for other transactions to complete. This is particularly crucial in a collaborative environment where multiple users might be accessing or modifying data concurrently.

In contrast, the other concepts mentioned, such as record locking and transaction isolation, deal more with how data integrity is maintained during concurrent transactions rather than the ability to handle multiple transactions at the same time. Data replication pertains to the copying of data across different systems or environments, which isn’t directly related to the concept of handling simultaneous transactions.