Handling errors

Let's practice error handling in a real-world scenario.

You have built an application that includes a registration form for new users. As part of the setup, you have added a unique constraintA constraint that permits only one node or relationship with a given property value for its label or type. on the email propertyA named value stored on a node or a relationship. for the User labelA tag on a node that groups it with other nodes of the same kind. A node can carry more than one..