Graph Database

Neo4j

• Introduction to Neo4j (slides)
• Neo4j use cases (pdf)
• Cypher Tutorial
  • Cypher Video Tutorial
  • Cypher Reference Card
  • Another Cypher Tutorial
• Max Demarzi Blog on Neo4j

Tinkerpop stack

• Gremlin
  • Introduction to Gremlin
  • Groovy
    • Tutorial Groovy Closures
    • Practically Groovy: Reaching for each
    • Scoping and the Semantics of "def"
• Titan
  • Aurelius (company that provide Titan)
    • Bog
  • Titan Introduction
  • Thunderdome Python bindings to Titan
• Faunus
  • Graph algorithms in MapReduce
• Tinkerpop Book

Apache

• Accumulo
• Giraph
• HBase
• Spark
  • Graphx

Python Wrapper

• Python Wrapper for Neo4j
  • Python-embedded (default library from Neo4j)
  • Py2Neo
    • Introduction to Py2Neo
    • Documentation
    • Tutorials
  • Neo4j-rest-client
    • Neo4j-rest-client’s documentation
  • Bulbflow
  • Pyblueprints

Tools

• Geoff (File format for graph description)
• Gremlin (Gremlin is a graph traversal language)
  • Gremlin Tutorial
• Temporal Graph with Neo4j
  • Sociopatterns

Blog

• Marko Rodriguez Blog on Graph DB
  • Movie Recommender Engine Example
• Lab41

Papers

• An NSA Big Graph experiment

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Howto gremlin

Howto connected to Neo4j from gremlin shell

>$ gremlin

          \,,,/
          (o o)
 -----oOOo-(_)-oOOo-----
gremlin> g = new Neo4jGraph("/usr/local/Cellar/neo4j/community-1.7.2-unix/libexec/data/graph.db")
==>neo4jgraph[EmbeddedGraphDatabase [/usr/local/Cellar/neo4j/community-1.7.2-unix/libexec/data/graph.db]]
gremlin>

Howto delete all the indexes in Neo4j

gremlin> neo4j = g.getRawGraph()
gremlin> manager = neo4j.index()
gremlin> manager.nodeIndexNames().each{ g.dropIndex( it ) }
gremlin> manager.relationshipIndexNames().each{  g.dropIndex( it )  }

Howto create an index

gremlin> g.createIndex("myIndex", Vertex.class)
gremlin> idx = g.idx("myIndex")
gremlin> vertices.each{ idx.put(key,value,it) }
....
gremlin> g.idx("myIndex")[[key:value]]

Video