This article outlines the database structure for the MMv4 ptcs database table.

• id
  Primary Key of the table.
  int(10) | unsigned | auto increment | primary key | indexed
  
• display_order
  The order in which the UpSell / DownSell chain will be displayed in the storefront.
  int(10) | unsigned | indexed
• active
  If this field contains a value greater than zero, then the UpSell/DownSell chain is active.
  int(10) | unsigned |  indexed
• name
  This is the name of the UpSell/DownSell chain, this name is only visable to store admin; customers will never see this name.
  varcahr(255) | indexed
• current_thread
  The system ID (SID) of the current thread of rules to be used in the next order that trigger's this specific UpSell/DownSell chain.
  int(10) | unsigned |  indexed