What is Azure SQL Database?
Answer
Azure SQL Database is a fully managed, intelligent relational database service based on the Microsoft SQL Server engine. As a PaaS offering, Azure handles hardware, OS, software patching, high availability, backups, and performance tuning automatically. Key features: Built-in high availability (99.99% SLA) with no extra configuration. Automatic backups with point-in-time restore. Serverless tier: auto-pauses when inactive, ideal for intermittent workloads. Elastic pools: share compute across multiple databases, optimal for SaaS multi-tenant scenarios. Geo-replication and failover groups for disaster recovery. Azure SQL Database supports most T-SQL features and is compatible with SQL Server tooling.
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