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  • Book Overview & Buying Getting Started with the Graph Query Language (GQL)
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Getting Started with the Graph Query Language (GQL)

Getting Started with the Graph Query Language (GQL)

By : Ricky Sun, Yuri Simione, Jason Zhang
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Getting Started with the Graph Query Language (GQL)

Getting Started with the Graph Query Language (GQL)

By: Ricky Sun, Yuri Simione, Jason Zhang

Overview of this book

Graph Query Language is becoming the go-to standard for graph databases, especially with its support for interconnected analytics and GenAI capabilities. This book comes from a team of industry veterans who know exactly how to break down the fundamental GQL concepts, graph terms, definitions, catalog systems, and everything that matters in actual work. You’ll get to grips with graph data types, value expressions, graph matching patterns, and modifying statements through practical GQL examples. Once you've got the basics down, you’ll tackle advanced GQL topics such as path modes, complex path matching patterns, shortest path queries, composite statements, session and transaction commands, and procedures. You’ll also learn to create extensions and understand the design of graph databases to solve industry issues. The authors cover techniques like property graphs to help you optimize your graph queries and offer insights into the future of GQL and graph technology. By the end of this book, you’ll confidently query and update graph data, run graph algorithms, create visualizations, and apply your learnings to a real-world use case of money flow analysis for assessing bank client behaviors and detecting transaction risks. *Email sign-up and proof of purchase required
Table of Contents (17 chapters)
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14
Glossary and Resources
15
Other Books You May Enjoy

Optional features

As discussed in the mandatory features of GQL, most optional features are explicitly specified by the Conformance Rules sections in subclauses. In the meantime, a few are specified implicitly elsewhere in the standard. For example, subclause 4.16.8, Immaterial value types: null type and empty type, includes the following statements:

“The immaterial value types are only provided by GQL-implementations that support the Feature GV70, “Immaterial value types”. In such GQL-implementations, the null type provides a portable most specific value type for various values (e.g., certain constructed values such as empty list values or the null value).”

This passage designates the immaterial value types, including null types and empty types, as optional rather than mandatory.

In the ISO/IEC 39075:2024 version of the GQL standard, every optional feature is clearly referenced by a feature ID (formatted as “G” followed by three...

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