SharePoint Versioning restriction & customize

Question

With regards to SharePoint 2007 versioning feature:

1. Is it possible to put restriction on who can delete the version of a changed item in a SharePoint List?
2. Can the versioning be apply to new item? Example: Suppose there are 3 items created inside a SharePoint List, it will be called Version 1. Later, someone add 5 new items into a SharePoint List, this will result in Version 2. So, if the admin notice that the 5 new items are invalid entry, it can simply delete Version 2.
3. Is it possible to delete certain version for a particular item in a SharePoint List?

Answer 1

1. Yes. You can customize or create new permission roles (ex. you can customize the contribute role to disallow deleteing items) See: http://office.microsoft.com/en-us/sharepoint-server-help/manage-permission-levels-HA010117209.aspx

2. Versioning is applied on a per-item basis. So, in your example, each Item would be at version 1 when uploaded. Suppose an item is edited, then checked in and published as a major version. That item is now version 2 while the other items are still version 1. Batch deletes based on version like you suggest is pointless. Instead, just delete the items individually.

3. Yes. See the answer to #1. One of the customizable abilities is the ability to delete versions.