Delete all nodes and relationships in neo4j 1.8

Question

I know this question is asked by many people already
for my research, here\'s some questions asked before

1. How to delete all relationships in neo4j graph?

Answer 1

if the name of node is for example : abcd then below query will work :

MATCH (n:abcd)
DETACH DELETE n

This will only delete the node with label "abcd" and all its relation-ships.