Tutorials ADO.NET Core Tutorial
Azure SQL — Complete Guide
Azure SQL — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of ADO.NET Core Tutorial on Toolliyo Academy.
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ADO.NET Core Tutorial · Lesson 81 of 100
Azure SQL
Foundations ✓ → SQL & safety ✓ → Production ✓ → Projects
Projects · 4 — Portfolio builds · ~10 min · Module 9: Cloud and DevOps
What is this?
Azure SQL uses the same Microsoft.Data.SqlClient with Azure AD auth, firewall rules, and retry guidance.
Why should you care?
ShopNest cloud DBs should prefer managed identity over SQL passwords when possible.
See it live — copy this example
Use a .NET console or API project with SQL Server LocalDB. Run dotnet run after pasting.
builder.Services.AddDbContext/*not needed*/();
// connection
"Server=tcp:shopnest.database.windows.net,1433;Authentication=Active Directory Default;Database=ShopNestDb;";
SqlConnection.ClearAllPools(); // after credential rotateWhat happened?
- AAD/Default auth.
- Transient fault retries.
- Geo-replication awareness for reads.
Practice next
- Create Azure SQL.
- Wire AAD connection string.
- Enable retry.
- Failover group read endpoint.
- Clear pools on rotate.
Remember
SqlClient + Azure SQL. AAD preferred. Retry transients.
ShopNest Azure SQL
API uses AAD Default to Azure SQL.
Outcome: No password in app settings.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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