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  • Book Overview & Buying Neo4j Graph Data Modelling
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Neo4j Graph Data Modelling

Neo4j Graph Data Modelling

By : Mahesh K Lal
3 (1)
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Neo4j Graph Data Modelling

Neo4j Graph Data Modelling

3 (1)
By: Mahesh K Lal
Buy this Book

Overview of this book

If you are a developer who wants to understand the fundamentals of modeling data in Neo4j and how it can be used to model full-fledged applications, then this book is for you. Some understanding of domain modeling may be advantageous but is not essential.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Graphs Are Everywhere
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1. Graphs Are Everywhere
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Graphs in mathematics
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The property graph model
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Storage – native graph storage versus non-native graph storage
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Reasons to use graph databases
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What to use a graph database for
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Choosing Neo4j for exploring graph databases
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The structure of the book
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Summary
2
2. Modeling Flights and Cities
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2. Modeling Flights and Cities
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Graphs are more than social
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Designing a system to get a travel itinerary
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Introduction to modeling nodes and relationships
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Using Cypher to operate on Neo4j
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Creating cities in Neo4j
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Indices
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Adding flights to Neo4j
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Traversing relationships
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Summary
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3. Formulating an Itinerary
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3. Formulating an Itinerary
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Creating an itinerary from flights and cities
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Business logic should lie in code
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Summary
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4. Modeling Bookings and Users
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4. Modeling Bookings and Users
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Building a data model for booking flights
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A simple model of the bookings ecosystem
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Modeling bookings in an RDBMS
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Creating bookings and users in Neo4j
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Queries to find journeys and bookings
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Queries to find the booking history of a user
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Summary
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5. Refactoring the Data Model
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5. Refactoring the Data Model
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Capturing information about hotels at airports
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Modeling airports and hotels
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Extracting airport information from flights
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Reasons for not migrating using a single query
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Adding hotels to airports
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Fetching hotels
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Summary
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6. Modeling Communication Chains
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6. Modeling Communication Chains
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Capturing traveler reviews for hotels
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A model for reviews and comments
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Adding reviews to Neo4j
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Adding comments to Neo4j
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Summary
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7. Modeling Access Control
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7. Modeling Access Control
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Controlling access for content change
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Modeling hierarchies
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Modeling access control groups and employees
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Querying the data model to find what is accessible to an employee
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Summary
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8. Recommendations and Analysis of Historical Data
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8. Recommendations and Analysis of Historical Data
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Recommending cities to travelers
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Recommending hotels to travelers
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Analysis of the historical data
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Summary
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9. Wrapping Up
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9. Wrapping Up
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There is no correct model
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Further reading and exploration
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What to watch out for while using Neo4j
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Index
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Index

Designing a system to get a travel itinerary

The travel domain is interesting in terms of data modeling challenges. Throughout this book, we will be modeling systems that work together in a website that can be used for planning flight travel. Travelers would like to look at the options for an itinerary before booking any particular set of flights, especially if there is no direct flight from the traveler's current city to the destination city. Normally, an itinerary includes total duration, layover duration, and the number of hops it takes to reach the destination. We cannot, however, derive the itinerary without modeling cities and flights, which brings us to our first data modeling problem.

Introduction to modeling flights and cities

If we were to explain the problem of cities and the number of flights between them, we could start with drawing cities as nodes. In case two cities have two or more direct flights between them, we connect those two cities with an undirected relationship...

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