A "Trigger (Event)" refers to a specific occurrence that initiates a response or reaction in a system, process, or individual. In psychology, triggers can evoke emotional or behavioral responses, often linked to past experiences. For example, a particular sound or smell may remind someone of a traumatic event, leading to anxiety or distress. In programming, a trigger is a set of instructions that automatically executes in response to certain changes in a database. For instance, when a new record is added to a table, a trigger can automatically update related data or send notifications, ensuring data integrity and consistency within the system.