Azure SQL Managed Instance enables you to run cross-database queries the same way you do it in SQL Server. It also supports cross-database ownership chaining that will be explained in this post. Cross database ownership chaining enables logins to access the objects in other databases on the SQL instance even if explicit access permissions are... Read more

https://blogs.msdn.microsoft.com/sqlserverstorageengine/2018/08/17/database-ownership-chaining-in-azure-sql-managed-instance/