Basic Relationship

To track companies and their products:

• Make two Decks: Companies, and Product Lines.
• In Product Lines, add a Link field called "make" and select Companies as the link to deck.

That's it.

"Companies" deck

"Product Lines" deck

"make" field

Now that a relation is defined, any Card in Product Lines can link to a Companies card, establishing a two-way relationship:

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From the other direction, any Companies card can easily browse to all Product Lines that belong to the company:

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