Which of the following is one of the SQL Server based services that make up the Azure SQL family?
- AAzure Database for PostgreSQL, a managed open-source relational option
- BAzure Database for MySQL, a managed open-source relational option
- CAzure Cosmos DB, a globally distributed non-relational option
- DAzure SQL Managed Instance, a platform-as-a-service relational option Correct
Why A is wrong: Azure Database for PostgreSQL is an Azure service for an open-source engine, not a member of the SQL Server based Azure SQL family.
Why B is wrong: Azure Database for MySQL runs the open-source MySQL engine and sits outside the SQL Server based Azure SQL family.
Why C is wrong: Azure Cosmos DB is a non-relational service and is not part of the SQL Server based Azure SQL family.
Why D is correct: Correct. Azure SQL is the collective term for Microsoft SQL Server based database services, and Azure SQL Managed Instance is one of its three members alongside SQL Server on Azure VMs and Azure SQL Database.