What is the Fetch property in respects to Aggregates?

The Fetch property in the context of Aggregates is indeed essential for understanding how data is retrieved during execution. When you're working with Aggregates in OutSystems, the Fetch property specifically controls when the data should be retrieved from the database. This feature allows developers to optimize data retrieval by ensuring that data is only fetched when it is necessary for the application at a particular moment.

For example, if the Fetch property is set to "on demand," the application will not query the database until the data is actually needed, potentially improving performance and reducing unnecessary database load. This is particularly useful in scenarios where data is not always needed right away or is conditional based on user input.

Understanding how the Fetch property functions is crucial for efficient data management in OutSystems applications. It helps developers to balance responsiveness and resource utilization, ultimately enhancing the user experience and performance of the application.