How do tables within tables get stored?

[ctech4285]

I am looking at the Invoice example. The invoice can have many Product Items in the Portal table. but when you look at the table itself, not the layout then there is no such record.

I have a very similar problem with purchase orders from vendors. where there is one order with many products. i need to store them as transactions and perform some calculations on the values.

so how is that handled by filemaker??

Edited October 1, 2010 by Guest

[comment]

Not sure WHICH Invoice example you are looking at. In a classic implementation, line items are stored in their own table. The three tables are related as:

Invoices -< LineItems >- Products

[ctech4285]

i understand now. every entry in the line items table has an Invoice_ID. So Invoice layout knows where to pull these records from.

thanks for clarifying this.