Question about Access database linking in SharePoint

I have a database table I created in Access 2010, I can get it into SharePoint as a list and then create a calendar view.  I used the SharePoint icon under Database Tools in Access.  My problem is that when I enter new information in the Access Database I am not able to get SharePoint to reflect this update.

I should state that I am extremely rusty with Access and SharePoint.

I appreciate any help that can be offered and I thank you in advance.