Q. Can you access list data directly from SQL?
A. It is not recommended to access data directly from SQL. No documented APIs are available for this. Data manipulation should be done on the lists and libraries only.
Q. Can you do bulk operations on a SharePoint list?
A. You can perform batch inserts/updates on a SharePoint list using the
SPWeb.ProcessBatchData method. This API has been available since SharePoint 2007 and is documented at http://msdn.microsoft.com/en-us/library/cc404818(v=office.12).aspx.
Q. Can you customize the list forms?
A. SharePoint 2010 makes it easy to customize list forms. You learn about this in subsequent hours.