What are "declarative rules" in PRPC?

Declarative rules in PRPC are designed to automatically respond to changes in data sources, reflecting those changes in the application's behavior without the need for manual intervention. This characteristic allows for dynamic updates in the system, which makes declarative rules highly valuable for maintaining data integrity and consistency across applications.

For example, if a data source changes due to a new value being entered or updated, declarative rules can ensure that any dependent parts of the application are automatically adjusted to reflect that change. This leads to increased efficiency in application management and reduces the risk of errors caused by outdated information.

The other options do not capture the essence of declarative rules. Performance-related rules focus on enhancing system efficiency rather than automating responses to data changes. User authentication rules cater specifically to security measures and access control within applications, which does not align with the broader function of declarative rules. Finally, while workflow management is an important aspect of PRPC, declarative rules are not limited to this area; they encompass a wider range of data-driven automations throughout the application lifecycle.