Include warning about Prisma not supporting identity columns

nodeJS/orms/prisma_orm.md

@@ -118,6 +118,14 @@ You might have a complex query that you just are unable to get right via the Pri
 
 Prisma migrate is a tool that helps you perform database migrations. You won't be using it a whole ton in the curriculum, but it's good to be aware of it. When you decide to change the schema in any way, you run a Prisma migration to apply the schema changes to the database. These changes are tracked in a `migrations` folder in your codebase.
 
+<div class="lesson-note" markdown="1">
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+#### ORM Limitations
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+In the [Using Postgres](https://www.theodinproject.com/lessons/nodejs-using-postgresql) lesson, we learned about Identity columns. Postgres recommends the use of Identity columns, as they comply with the SQL standard. Prisma, however, does not support these columns, and will create Postgres specific [Serial Types](https://www.postgresql.org/docs/16/datatype-numeric.html#DATATYPE-SERIAL) instead. This most likely will not affect your projects, but it can be important to keep in mind. For a short description on the difference between Serial and Identity, see this [Stackoverflow answer](https://stackoverflow.com/a/55300741/1882858).
+
+</div>
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 ### Assignment
 
 <div class="lesson-content__panel" markdown="1">