Neo4j constraints: UNIQUENESS only? -
the neo4j manual page on constraints shows type
of each constraint uniqueness
. there other kind of constraint can applied?
currently, in neo4j stable version uniqueness
constraint supported.
but, in upcoming 2.3.0 release there new constraint added in neo4j - property exists
.
example:
create constraint on (book:book) assert exists(book.isbn) create constraint on ()-[like:liked]-() assert exists(like.day)
docs new constraint can found in 2.3.0-m03 release documentation - http://neo4j.com/docs/2.3.0-m03/query-constraints.html
also, can checkout blog post neo new constraints presented - http://neo4j.com/blog/neo4j-2-3-milestone-3-release/
note: new contraint available enterprise version.
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