Point-in-Time Restore Additive Model: Azure SQL Database Original Name Recovery Boundary

Point-in-Time Restore Additive Model: Azure SQL Database Original Name Recovery Boundary

Azure SQL Database point-in-time restore is additive: it always creates a new database with a system-generated name and cannot overwrite an existing database. This creates a compatibility boundary for teams expecting an in-place restore. Before recovered data can be verified under the original name, the restored copy must be swapped into place by either deleting the original first or renaming the original and then renaming the restored copy.

Each path carries different downtime and risk trade-offs. Deleting the original first removes the fallback copy during verification. Renaming preserves the original until the restored database is validated, yet active connections to the old name break during the swap. The restored database also receives a service objective chosen at restore time, which may differ from the source, and the available restore point is bounded by automated backup retention.

Because retention and purchasing models vary by service tier, confirm the exact boundary against current documentation. When the goal is to confirm data fidelity before committing to the original name, which sequencing minimizes the window where no verified copy exists under that name, how should connection strings be managed across the rename boundary, and what checks are sufficient to trust the restored database before retiring the original?