How/ Where is item, category, supplier, purchase requisition data maintained in sourcing and supplie

Summary

How/ Where is item, category, supplier, purchase requisition data maintained in sourcing and supplier qualification standalone implementation

Content

We are implementing sourcing and supplier qualification standalone with EBS as purchasing system. We want to know how item, category, supplier etc data will be stored in sourcing, whether we have a shared access to PIM to create items and categories and supplier UI to create suppliers ? Appreciate any pointers.

Thanks,

Santhosh