Prisma

Hello, I have a question I think about databases in general that I don't understand and I would appreciate if someone could point me somewhere to learn how this aspect of Prisma works.

I introspected a Prisma model from a database I already have set up and there are a lot of paired types (which you can also see in the example docs, such as
`XOR&lt;UserCreateInput,`
`UserUncheckedCreateInput&gt;`
 I'm wondering what the Unchecked means, what the difference between these two types is, and how Prisma decides which one to use when executing a Create mutation.

Hey Jeremiah :wave:

“Unchecked” input types allow you to perform some operations that are often considered “dangerous”, like directly writing foreign keys.

Prisma allows you to choose either a safe or an unchecked input type when doing operations like `create`.

Sorry, a follow up question. How does Prisma decide which input type is used? The arguments provided?

I figured it out. I was trying to do a nested `connect` from a `create` and was listing two unique properties in the `where`. The error message just didn't make sense to me.

Glad to hear that you were able to figure out the solution! :raised_hands:
Thanks for the feedback on the error message, I’ll pass that to the team.