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  • 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

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
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Graphs Are Everywhere
1. Graphs Are Everywhere
Graphs in mathematics
The property graph model
Storage – native graph storage versus non-native graph storage
Reasons to use graph databases
What to use a graph database for
Choosing Neo4j for exploring graph databases
The structure of the book
Summary
2
2. Modeling Flights and Cities
2. Modeling Flights and Cities
Graphs are more than social
Designing a system to get a travel itinerary
Introduction to modeling nodes and relationships
Using Cypher to operate on Neo4j
Creating cities in Neo4j
Indices
Adding flights to Neo4j
Traversing relationships
Summary
3
3. Formulating an Itinerary
3. Formulating an Itinerary
Creating an itinerary from flights and cities
Business logic should lie in code
Summary
4
4. Modeling Bookings and Users
4. Modeling Bookings and Users
Building a data model for booking flights
A simple model of the bookings ecosystem
Modeling bookings in an RDBMS
Creating bookings and users in Neo4j
Queries to find journeys and bookings
Queries to find the booking history of a user
Summary
5
5. Refactoring the Data Model
5. Refactoring the Data Model
Capturing information about hotels at airports
Modeling airports and hotels
Extracting airport information from flights
Reasons for not migrating using a single query
Adding hotels to airports
Fetching hotels
Summary
6
6. Modeling Communication Chains
6. Modeling Communication Chains
Capturing traveler reviews for hotels
A model for reviews and comments
Adding reviews to Neo4j
Adding comments to Neo4j
Summary
7
7. Modeling Access Control
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7. Modeling Access Control
Controlling access for content change
Modeling hierarchies
Modeling access control groups and employees
Querying the data model to find what is accessible to an employee
Summary
8
8. Recommendations and Analysis of Historical Data
8. Recommendations and Analysis of Historical Data
Recommending cities to travelers
Recommending hotels to travelers
Analysis of the historical data
Summary
9
9. Wrapping Up
9. Wrapping Up
There is no correct model
Further reading and exploration
What to watch out for while using Neo4j
10
Index
Index

Controlling access for content change

A hotel chain can have multiple hotels in different locations across cities or even countries, and each of these needs to edit its content. Employees of a hotel chain can be associated with particular hotels or regions. Assuming each hotel has autonomy in deciding and modifying their own content, we have the following scenarios to be addressed:

  • Employees of a hotel chain should have access to modify the content for the hotels they have access to, depending on the access groups they are in

  • Employees of a hotel shouldn't have access to modify any other hotel's content irrespective of the fact that there might be other hotels belonging to the same parent hotel chain

  • Employees of a hotel chain shouldn't be able to access content of other hotel chains

End of Section 2
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