🔐 Power BI Explained: What is Row-Level Security (RLS)?

 Row-Level Security (RLS) in Power BI restricts data access for users at the row level, ensuring that users see only the data relevant to them.


🧩 Why Use RLS?

✅ Secure sensitive data
✅ Personalize reports per user
✅ Control access without duplicating reports


🔍 How RLS Works

You define DAX filters on tables, and assign roles to users.


🛠️ Example: Sales by Region

UserRegion Viewable
AliceNorth
BobSouth

🎯 DAX Filter for Alice’s Role:

Dax

[Region] = "North"

👤 Alice will only see data where Region = North.


📦 Where to Set Up RLS

1️⃣ Power BI Desktop
→ Model View → Manage Roles → Define Filters

2️⃣ Power BI Service
→ Dataset Settings → Security → Assign Users to Roles


✅ Best Practices

🔑 Use a User Table for dynamic RLS
🔍 Test roles using "View As Role"
📁 Keep RLS logic in your data model, not visuals

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