[SSISDB].[internal].[operations] vs [SSISDB].[catalog].[executions]

This is on SSIS 2012. What is the difference between these two? I see that one is a table and the other is a view. But not sure how the contents are different.

They both seem to be a log of some sort for each exectution of a package in the SSIS catalog, but I have slightly more entries in [internal].[operations].

If I wanted to check the status of an execution_id immediately after executing

EXEC [SSISDB].[catalog].[start_execution] @execution_id = @exec_id

which would be the appropriate object to check. I think it is [internal].[operations] but wanted to confirm.

EDIT: I did look at the view definition, but was hoping for a quick confirmation on my last statement above.