Book Overview & Buying
Table Of Contents

Learning Neo4j 3.x - Second Edition

By : Jerome Baton, Van Bruggen

4 (7)

Buy this Book

Learning Neo4j 3.x

4 (7)

By: Jerome Baton, Van Bruggen

Buy this Book

Overview of this book

Neo4j is a graph database that allows traversing huge amounts of data with ease. This book aims at quickly getting you started with the popular graph database Neo4j. Starting with a brief introduction to graph theory, this book will show you the advantages of using graph databases along with data modeling techniques for graph databases. You'll gain practical hands-on experience with commonly used and lesser known features for updating graph store with Neo4j's Cypher query language. Furthermore, you'll also learn to create awesome procedures using APOC and extend Neo4j's functionality, enabling integration, algorithmic analysis, and other advanced spatial operation capabilities on data. Through the course of the book you will come across implementation examples on the latest updates in Neo4j, such as in-graph indexes, scaling, performance improvements, visualization, data refactoring techniques, security enhancements, and much more. By the end of the book, you'll have gained the skills to design and implement modern spatial applications, from graphing data to unraveling business capabilities with the help of real-world use cases.

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

Graph Theory and Databases

Introducing Neo4j 3.x and a history of graphs

Definition and usage of the graph theory

Background

The Property Graph model of graph databases

Why use graph databases, or not

Test questions

Summary

Getting Started with Neo4j

Key concepts and characteristics of Neo4j

Sweet spot use cases of Neo4j

The features

The license conditions

Installing Neo4j

Using Neo4j in a cloud environment

Sandbox

Using Neo4j in a Docker container

Test questions

Summary

Modeling Data for Neo4j

The four fundamental data constructs

How to start modeling for graph databases

A graph model – a simple, high-fidelity model of reality

Graph modeling – best practices and pitfalls

Test questions

Summary

Getting Started with Cypher

Writing the Cypher syntax

Key attributes of Cypher

Being crude with the data

Key operative words in Cypher

Syntax norms

More that you need to know

The Cypher refcard

The openCypher project

Summary

Awesome Procedures on Cypher - APOC

Installing APOC

Verifying APOC installation

Functions and procedures

My preferred usages

Several key usages

Test questions

Summary

Extending Cypher

Building an extension project

Custom aggregators

Unmanaged extensions

Summary

Query Performance Tuning

Explain and profile instructions

Indexes

Rules of thumb

Summary

Importing Data into Neo4j

LOAD CSV

Importing from a JSON source

Importing from a JDBC source

Importing from an XML source

Summary

Going Spatial

What is spatial?

What is so spatial then?

Neo4j spatial

Removing all the geo data

Summary

Security

Authentication and authorization

Roles

Users management

Linking Neo4j to an LDAP directory

Configuring Neo4j to use LDAP

Test questions

Summary

Visualizations for Neo4j

The power of graph visualizations

Open source visualization libraries

Closing remarks on visualizations - pitfalls and issues

Cytoscape example

Questions and answers

Summary

Data Refactoring with Neo4j

Preliminary step

Simple changes

Great changes

Consequences

Summary

Clustering

Why set up a cluster?

Concepts

Building a cluster

Disaster recovery

Summary

Use Case Example - Recommendations

Recommender systems dissected

Using a graph model for recommendations

Specific query examples for recommendations

Business variations on recommendations

Fraud detection systems

Access control systems

Social networking systems

Questions and answers

Summary

Use Case Example - Impact Analysis and Simulation

Impact analysis systems dissected

Impact simulation in a cost calculation environment

Questions and answers

Summary

Tips and Tricks

Reset password

Enabling SSH on a Raspberry Pi

Creating guides for the Neo4j browser

Data backup and restore

Tools

Community projects

Online documentation

Community

More proverbs

Getting Started with Cypher

Cypher is the query language (QL) of Neo4j. Database systems need query languages in order for humans and software applications to interact with them in an efficient way. There are a number of graph query languages out there already (Gremlin, GraphQL and SparQL, to name a few), and some of these have certainly inspired the creation of Cypher, but Cypher is quite different than anything else you may have come across before. No book on Neo4j would be complete without at least spending some time on it--in spite of the fact that there are entire books, presentations, and courses available for you to review. Of course, we will do more than just get started.

In this chapter, we will cover the following topics: