create_address.adoc

Create unique "users like items".

CREATE CONSTRAINT ON (user:User) ASSERT user._id IS UNIQUE

CREATE CONSTRAINT ON (item:Item) ASSERT item._id IS UNIQUE

Now make "Alex" like "Beer".

MERGE (alex:Person{_id:'Alex'})
MERGE (beer:Item{_id:'Beer'})
CREATE alex-[:LIKES]->beer

And make "Steve" like "Beer".

MERGE (steve:Person{_id:'Steve'})
MERGE (beer:Item{_id:'Beer'})
CREATE steve-[:LIKES]->beer

Of course "Alex" likes "Hamburgers" as well.

MERGE (alex:Person{_id:'Alex'})
MERGE (burger:Item{_id:'Hamburger'})
CREATE alex-[:LIKES]->burger