anchor.diff:  
   [source,cypher]
   ----
  -CREATE CONSTRAINT ON (p:Person) ASSERT p.id IS UNIQUE
  +CREATE CONSTRAINT ON (person:Person) ASSERT person.id IS UNIQUE
   ----
   
   [source,cypher]
   ----
  -CREATE CONSTRAINT ON (m:Movie) ASSERT m.id IS UNIQUE
  +CREATE CONSTRAINT ON (movie:Movie) ASSERT movie.id IS UNIQUE
   ----
   
   Now importing the relationships is a matter of finding the nodes and then creating relationships between them.
  
positive.code: 
  [source,cypher]
  ----
  DROP CONSTRAINT ON (p:Person) ASSERT p.id IS UNIQUE
  ----
  
  [source,cypher]
  ----
  DROP CONSTRAINT ON (m:Movie) ASSERT m.id IS UNIQUE
  ----
  
  [source,cypher]
  ----
  MATCH (m) WHERE m:Person OR m:Movie REMOVE m.id
  ----
  
  
negative.code: CREATE (p:Person {id: toInt(csvLine.id), name: csvLine.name})
  ----
  
  ////
  Nodes created: 5
  Properties set: 10
  ////
  
  Now, let's import the movies.
  This time, we're also creating a relationship to the country in which the movie was made.
  If you are storing your data in a SQL database, this is the one-to-many relationship type. 
  