如何使用Core Data保存在表视图中存储或显示的所有详细信息？

I am developing an app which parses an Xml or RSS feeds of a magazine..The thing is I have to include an offline capability,ie save the previous results which were displayed in each cell(similar to the New York times app) and then display the saved ones when there is no network connection..I am developing an app which parses an Xml or R