Which action should be performed to retrieve data from the database in OutSystems?

To retrieve data from the database in OutSystems, the appropriate action is to use the Retrieve operation. This action is specifically designed for fetching data, allowing developers to specify different querying options such as filters, sorting, and pagination, which helps in efficiently accessing the required records from the database.

The Retrieve operation enables the interaction with the application's database layer to obtain data entities, using the structures defined in the data model. This action is vital for presenting information in user interfaces, handling business logic, and ensuring data persistence within applications.

In contrast, the other options serve different purposes: updating modifies existing records, deleting removes them from the database, and creating adds new records. None of these actions are suitable for fetching data, highlighting why Retrieve is the correct choice for this operation. Understanding the specific roles of these actions is crucial for effective database management in OutSystems applications.