Fabric Certification Practice Test: Prep, Questions & Study Guide

Direct Lake allows for real-time data interaction with reports, especially when Row-Level Security (RLS) is applied. In scenarios where DAX queries are used, implementing DirectQuery mode is crucial because it enables dynamic query execution against the data source each time a user interacts with the report. This means that all permissions enforced by RLS are applied in real-time, ensuring that users only see data they are allowed to access based on their specific roles.

When using DirectQuery mode, each user's actions lead to live queries being sent to the underlying data source, rather than relying on pre-imported data. This live interaction is essential in scenarios where data privacy and security are paramount, as it honors the RLS rules throughout the session. As the data is fetched on-the-fly, the immediate effect of these queries allows for precise monitoring and analysis of interactions with the report under the constraints of RLS.

Import mode, Delta tables, and enabling aggregation features do not provide the same level of real-time interaction or security enforcement as DirectQuery mode. For example, Import mode would typically cache a snapshot of the data, which would not apply RLS dynamically. Delta tables focus on data versioning and changes rather than on real-time query execution. Aggregation features are