cart page is not showing in magento

hi i have made the some changes in checkout.xml and after this cart page stop showing so i have again revert all the changes. b开发者_C百科ut still cart page is not showing. then i download the theme folder and place it in default magento and everything looking as it appear before. so i think there might be some wrong entry in database. can anyone tell the table name so i can modify that. thanks

Magento has some database documentation you can use. Not a specific answer to your question, but hopefully this will point you on the right track.

Make sure you have "Enable" Mage_Checkout from your Magento Admin Panel -> System -> Configuration -> Advance. If it is Disable then Enable it.