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Rodger Lepinsky, Database Expert, Data Analyst, Data Scientist.
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Category: Graph Database

Installing NEO4J on Windows 7

November 7, 2014 Rodgers Notes Writer Leave a comment

Installing and running NEO4J on Windows is a little different from from Linux. Here’s how to do it.

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Posted in: Graph Database Filed under: Java, NEO4J, Windows 7

Presentation: Graph Databases – Overview and Applications

June 6, 2014 Rodgers Notes Writer Leave a comment

The slides to my presentation: Graph Databases – Overview and Applications

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Posted in: Graph Database Filed under: Data Science, Graph database, pdf

NEO4J – Shortest Paths in the Cineasts Database

August 19, 2013 Rodgers Notes Writer Leave a comment

How many movies and co-actors link the actor Henry Fonda from his granddaughter Bridget Fonda? Actually, not many.

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Posted in: Graph Database Filed under: AllShortestPaths, Cypher, NEO4J, ShortestPath

Counting Many Paths Between Nodes In NEO4J

August 16, 2013 Rodgers Notes Writer Leave a comment

Continuing my exploration of DBA_OBJECTS using NEO4J, and Cypher, there can be VERY MANY paths between one object and another. The more complex and interconnected the graph, the number of paths between nodes goes up exponentially.

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Posted in: Graph Database Filed under: Child, Cypher, dba_dependencies, dba_objects, NEO4J, Parents, Path, Tree Structure

Using NEO4J To Find Paths To All Parent Or Child Objects

August 12, 2013 Rodgers Notes Writer 3 Comments

Here’s how to find the paths to all generations of parents or children of an Oracle object using the graph database, NEO4J and Cypher.

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Posted in: Graph Database Filed under: Cypher, dba_objects, NEO4J

Visualizing Almost Fifty Thousand DBA_OBJECTS In A Graph

August 6, 2013 Rodgers Notes Writer 3 Comments

How would you visualize almost fifty thousand Oracle DBA_OBJECTS? Using the graph database NEO4J and Gephi.

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Posted in: Graph Database Filed under: dba_objects, Fruchterman Reingold, Gephi, NEO4J, OpenOrd

DBA_OBJECTS Tree – Modelled As A Graph in NEO4J, Visualized With Gephi

July 31, 2013 Rodgers Notes Writer 2 Comments

Here’s how you can visualize a tree of DBA_OBJECTS

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Posted in: Graph Database Filed under: Children, dba_objects, Gephi, NEO4J, Parents, Tree Structure

Recommendation Engines: RDBMS and SQL, Versus Graph Database

May 30, 2013 Rodgers Notes Writer 4 Comments

For a Recommendation Engine, which tool would you use: SQL and RDBMS, or a Graph Database?

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Posted in: Graph Database Filed under: Cartesian Products, Cypher, NEO4J, RDBMS, SQL

NEO4J: Finding Object Information Using the Web Interface

February 4, 2013 Rodgers Notes Writer Leave a comment

NEO4J has provided a very functional web interface to find information on objects returned from queries. The relationships can be turned into a graph instantly.

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Posted in: Graph Database Filed under: NEO4J, node identifier, SQL

Getting Started With NEO4J: For Database Professionals

February 3, 2013 Rodgers Notes Writer 1 Comment

NEO4J can easily do many things better than a traditional RDBMS could. The graph database looks better suited to some applications than RDBMS, or linked lists. For example: molecules, tree structures, social networks, or paths.

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Posted in: Graph Database Filed under: Cineasts, NEO4J, SQL
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