Dynamic Meta data

What is the best way to have a table that defines what the thing is
and another table that defines if you hae it or not… maybe a table
will describe what i want better!! :

       ----------------define the items in one table
      V

[X] ITEM1
[] ITEM2
[
] ITEM3
[X] ITEM4

[_] ITEMX

^------------------------Define if the user has it in another

Is this polymorphic? please point me where to learn how to do this
the right way…

This is a simple many-to-many relationship.

See here:

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