Model Simple Data in a Graph For Use in Neo4J

Create Nodes and Relationships in Neo4J with Cypher

Read Nodes and Relationships in Neo4J with Cypher

Update Nodes and Relationships in Neo4J with Cypher

Delete Nodes and Relationships in Neo4J with Cypher

Use neo4j-graphql-js to Create a Simple API

Explicitly Model Schema Relationships with the @relation Directive in neo4j-graphql-js

Create Data in Neo4J Through a GraphQL API

Create Custom GraphQL Mutations with the @cypher Directive in neo4j-graphql-js

Build Complex Schema Relationships with the @cypher Directive in neo4j-graphql-js

Build a Neo4J & GraphQL API

Nothing lives forever, so we need to know how to use DELETE and DETACH to get rid of nodes and relationships we no longer want in our graph.

Instructor: [00:01] Removing nodes from Cypher is as simple as using MATCH to find the node and DELETE to remove it. If we're trying to delete a node with relationships however, we will need to instruct Neo4j to first detach that node's relationships and then delete the node. This will detach and delete all incoming and outgoing relationships for the node in question.

[00:23] We can also use DELETE to remove relationships connecting the nodes in our graph. We can see that Han is no longer related to Chewie through the "Has sidekick" relationship.

Course

Build a Neo4J & GraphQL API

Delete Nodes and Relationships in Neo4J with Cypher

Share this video with your friends