It's an example I found through a Google search. IIRC the poster was trying to get it working and it caught my attention.

Thanks

>Question, did you write this trigger or did someone else?
>
>
>Basically, it's saying this....
>
>For every new row that was inserted into publications....
> find every book in the Books table with the same ISBN of the publication that was inserted, and increment the column in books called NumPublications
>
>My question is, what's the context of/relationship between publications and books?