Can I link items in one list to items in parent site list in Sharepoint 2010?

I have a parent site with several subsites in SharePoint 2010.

I have a list in the parent site (call it Product Backlog) that lists in th开发者_运维百科e subsites (Sprint Backlog) need to be able to link to.

Is this possible in SharePoint 2010? That is, Can I add a lookup field in my subsite lists that points to the parent site list as the source of the data?

This is a common requirement. Event though there isn't any out-of-the-box solution, there are some workarounds for this. Check this out