Neo4j constraint

Description

The Neo4j constraint action can be used to create or drop constraints on node or relationship properties in a Neo4j Graph

For similar operations on Neo4j indexes, check the Neo4j index action.

Options

  • Neo4j Connection : The name of the Neo4j connection to update indexes on

  • Constraint updates to perform: You can specify your list of constraint updates here

    • Update type : CREATE or DROP

    • Type of object to index on: NODE or RELATIONSHIP

    • Type of constraint: UNIQUE, NOT_NULL, or NODE_KEY

    • Constraint name: The name for your constraint (mandatory)

    • Object name: the label of the node or relationship you want to update a constraint for

    • Property: the property to put the constraint on (for NODE_KEY, use comma-separated properties like "id,name")

NODE_KEY constraints are only available in Neo4j Enterprise Edition. NODE_KEY constraints require multiple properties (comma-separated) and can only be applied to nodes, not relationships.

Show Cypher Preview

The action dialog includes a "Show Cypher" button that displays a preview of the Cypher statements that will be executed for creating or dropping constraints. This preview shows the exact CREATE CONSTRAINT or DROP CONSTRAINT statements before execution.

The preview is read-only and helps you verify the constraint operations that will be performed, including the correct syntax for UNIQUE, NOT_NULL, and NODE_KEY constraints.