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If the role doesn't exist, SQL Server will create a database role using the specified name.
Best practice is to create a role and explicitly allow access to the service account running SSIS.
Depending on your reporting needs, this could be every five minutes, once a day, or anything in between.
Let's take a closer look at each of these steps.
You can view the cdc schema items in the System Tables and System Stored Procedures folders in SQL Server Management Studio (SSMS).
Any tables you want to track need to be enabled, which you accomplish with the sys.sp_cdc_enable_table stored procedure.
If you specify a database security role that currently exists, it's used.
The data can be obtained from your order tracking application, but this system needs to be highly available and shouldn't be hit with large queries during the day when orders are being processed.
The solution that makes the most sense is to create a copy of the database that can be used for reporting, but there are millions of records on these tables and even a nightly load won't complete in the available maintenance window.
Then, you use another SSIS package to bring over incremental changes using the new CDC task and CDC source.
This package can be run at the desired interval to get changes into the ODS tables.
This process has been available since SQL Server 2008, but with the release of SQL Server 2012, there are new SSIS tasks and components that make the process less complex.