How can dynamic user access filtering be implemented in Power BI?

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Dynamic user access filtering can be implemented in Power BI through the use of Row-Level Security (RLS).

1. First, define the roles and their corresponding access levels. For example, a manager may have access to all data, while an employee may only have access to their own data.

2. Next, create a table that maps users to their respective roles. This table should include an identifier for each user, such as their email or user ID, and the corresponding role they belong to.

3. Create a measure or column that identifies the current user accessing the report. This can be done using the following DAX formula:

=USERNAME()

1. Create a relationship between the user-to-role mapping table and the relevant data tables.

2. Finally, create a filter based on the current user's role, using the following DAX formula:

=RELATED(Roles[Role])

This filter will dynamically limit the data displayed based on the current user's role. Only data that the user is permitted to access will be displayed in the report.

Note: RLS must be enabled in the Power BI model settings for this method to work.