Neo4j Sarvesh Nagarajan TODO: Perhaps add a picture here.

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Presentation transcript:

Neo4j Sarvesh Nagarajan TODO: Perhaps add a picture here

Outline What is Neo4j? Graph Databases Cypher Application Domains

What is Neo4j Developed by Neo Technologies Most Popular Graph Database Implemented in Java Open Source (www.neo4j.org)

Graph Databases Database that uses graph structures with nodes, edges and properties to store data Provides index-free adjacency Every node is a pointer to its adjacent element Edges hold most of the important information and connect nodes to other nodes nodes to properties TODO: Add pictures here

Graph Databases (Wikipedia)

Advantage of Graph Databases When there are relationships that you want to analyze Graph databases become a very nice fit because of the data structure Graph databases are very fast for associative data sets Like social networks Map more directly to object oriented applications Object classification and Parent->Child relationships

Disadvantages If data is just tabular with not much relationship between the data, graph databases do not fare well OLAP support for graph databases is not well developed Lots of research happening in this area Ease of aggregation

Salient features of Neo4j Neo4j is schema free – Data does not have to adhere to any convention ACID – atomic, consistent, isolated and durable for logical units of work Easy to get started and use Well documented and large developer community Support for wide variety of languages Java, Python, Perl, Scala, Cypher, etc (Mistry, Deep, 2013)

Neo4j Software Architecture (Bachman, 2013, p.11)

Cypher Query Language for Neo4j Easy to formulate queries based on relationships Many features stem from improving on pain points with SQL such as join tables (Hunger, Michael 2013)

Cypher (www.neo4j.org/learn/cypher)

Cypher (www.neo4j.org/learn/cypher)

Application Domains (www.neo4j.org)

Conclusion Key questions to ask yourself Is my data going to have a lot of relationships? What sort of questions would I like to ask my database? Neo4j is a fantastic Graph Database

Questions?

References http://www.neo4j.org http://www.neo4j.org/learn/cypher Bachman, Michal (2013). GraphAware: Towards Online Analytical Processing in Graph Databases http://graphaware.com/assets/bachman-msc-thesis.pdf Hunger, Michael (2012). Cypher and Neo4j http://vimeo.com/83797381 Mistry, Deep (2013). Neo4j: A Developer’s Perspective http://osintegrators.com/opensoftwareintegrators%7Cneo4jadevelopersperspective Wikipedia (Neo4j, Graph Database)