AnsweredAssumed Answered

Join table trouble

Question asked by andrewviolet1 on Jan 24, 2014
Latest reply on Jan 24, 2014 by keywords

Im still new to filemaker and have been trying to do some training on relational databases. I thought I understood this but still struggling. Based on what im trying to do which I will outline below, I am hoping for some more feedback.



  • I have an inventory table which keeps track of items, quantity, and price.
  • I have a sales table which I want to be able to keep track of sales that were made.
  • I have a join table to link these two table.



  • If i sell an item i would like it to update the inventory count.
  • When viewing sales I would like to use a portal to select items that were sold, and update the inventory


I have attached a screen shot of the relationships. This doesnt seem to work for me. I cant get a portal to work on my sales layout. It appears that the pk_ID_Sales in my sales table is creating a many to many relationship to the pk_ID_sales in my Sold_Items_Join table. when linking the inventory table to the join table it creates a one to many but the sales to join table creates a many to many. I dont understand why.


Thanks for any help!