I have a list in Sharepoint, and I update it every week with a Excel file...
But every time I do it, I have to delete all items and import my Excel file..
Is there an easier way to do this?
I was thinking in Access, but I dont know if it is possible
You can do it with Excel or Access:
Excel: http://office.microsoft.com/en-in/sharepoint-help/synchronize-a-list-with-a-spreadsheet-program-HA102815832.aspx
Access: http://office.microsoft.com/en-ca/access-help/import-from-or-link-data-to-a-sharepoint-list-HA102749600.aspx
You can use Datasheet view. Create a view containing all required fields. Open that view using Datasheet view action in ribbon. You can use Copy and Paste operations to import data from Excel to sharepoint list.
Export key is enabled when your data is in tabular format