| this article last updated: January 19, 2010 Due to inevitable changes that will be made to the shopping cart software over time, the cart's variable and database structure may change from time to time without advanced notice. We will attempt to keep the information in this article up-to-date, but Modular Merchant makes no guarantee as to the accuracy of the information provided in this article. Use this information at your own risk. 
 This article outlines the database structure for the MMv4 ptcs_item database table.
 
 idPrimary Key of the table.
 int(10) | unsigned | auto increment | primary key | indexed
 
display_orderThe order in which the UpSell / DownSell products will be displayed in the storefront to the customer.
 int(10) | unsigned | indexed
ptcs_idThis is the id reference to the ptcs DB table.
 int(10) | unsigned | indexed
thread_idSpecifies the which thread this UpSell/DownSell element of the chain represents.
 char(1) | indexed | default: A
 
pidThe system ID (SID) number of the Product in which will be displayed for this UpSell/DownSell element.
 int(10) | unsigned | indexed
accept_item_idThis is the system ID number (SID) of the product that will be displayed to the customer if they choose to purchase the displayed UpSell product in the storefront.
 int(10) | unsigned | indexed
skip_item_idThis is the system ID number (SID) of the product that will be displayed to the customer if they choose to skip the displayed UpSell product in the storefront.
 int(10) | unsigned | indexed
   
 
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