SWIS questions re: API deletes

Hi,

Very new to SWIS and have couple questions:

1. Some docs I've read say SWIS is read-only (e.g. can't create, delete, etc.) but other docs say it is not;  which is it?  and perhaps it depends on the SWIS and product versions?

2. If one does delete a Node from the Nodes table via API, does the API layer automatically also delete associated resources (e.g. interfaces, pollers) or does the API have to know/do all of this ?

Thanks in advance,

-Matt