ISO/IEC 39075:2024 PDF

Information technology — Database languages — GQL

First page of standard ISO/IEC 39075:2024

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Title (English):

ISO/IEC 39075:2024

Information technology — Database languages — GQL

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 610
Publication date:: April 12, 2024
Edition:: ISO/IEC IS 39075 edition 1 version 1
ICS:: 35.060

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Description (English):

This document defines data structures and basic operations on property graphs. It provides capabilities for creating, accessing, querying, maintaining, and controlling property graphs and the data they comprise. This document specifies the syntax and semantics of a data management language for specifying and modifying the structure of property graphs and collections thereof. This document provides a vehicle for portability of data definitions and manipulation among GQL-implementations. Implementations of this document can exist in environments that also support application programming languages, end-user query facilities, and various tools for database design, data administration, and performance optimization.

Technical details

Technical committee: ISO/IEC JTC 1/SC 32 - Data management and interchange
SKU: ISO/IEC 39075:2024

Abstract

Overview

ISO/IEC 39075:2024 - Information technology - Database languages - GQL defines a standardized data management language for property graphs. The standard specifies the syntax and semantics for data structures and core operations on property graphs, including creating, accessing, querying, maintaining, and controlling graphs and collections of graphs. ISO/IEC 39075:2024 is intended to enable portability of graph data definitions and manipulation across different GQL implementations and to operate alongside application programming languages, end‑user query tools, and database administration and optimization tooling.

Key topics and technical scope

ISO/IEC 39075:2024 covers comprehensive language and runtime concepts relevant to property-graph databases. Major topics include:

Graph data model: descriptors for graphs, nodes, edges, properties, and key/label sets.
Syntax and semantics: formal language rules for defining and manipulating graph structures and values.
Graph pattern matching: path patterns, match modes, path search and pattern variables for expressive graph queries.
Data types and values: predefined and constructed value types, temporal types, numeric, string and reference types, and nullability rules.
Schema and catalog: GQL catalog, schemas, directories and object references for organizing graph definitions.
Session and transaction management: session commands, transaction demarcation, isolation and control commands (start, commit, rollback).
Procedures and commands: procedure specification, execution contexts, statements, and diagnostics for programmable graph operations.
Execution and security: execution contexts, authorization identifiers, principals and basic security model.
Portability and interoperability: language constructs intended to support consistent behavior across different GQL implementations.

Practical applications and users

ISO/IEC 39075:2024 is valuable for:

Database vendors and engine implementers building GQL-compliant property-graph databases or adding graph capabilities to existing systems.

Abstract

Overview

Key topics and technical scope

ISO/IEC 39075:2024 covers comprehensive language and runtime concepts relevant to property-graph databases. Major topics include:

Graph data model: descriptors for graphs, nodes, edges, properties, and key/label sets.
Syntax and semantics: formal language rules for defining and manipulating graph structures and values.
Graph pattern matching: path patterns, match modes, path search and pattern variables for expressive graph queries.
Data types and values: predefined and constructed value types, temporal types, numeric, string and reference types, and nullability rules.
Schema and catalog: GQL catalog, schemas, directories and object references for organizing graph definitions.
Session and transaction management: session commands, transaction demarcation, isolation and control commands (start, commit, rollback).
Procedures and commands: procedure specification, execution contexts, statements, and diagnostics for programmable graph operations.
Execution and security: execution contexts, authorization identifiers, principals and basic security model.
Portability and interoperability: language constructs intended to support consistent behavior across different GQL implementations.

Practical applications and users

ISO/IEC 39075:2024 is valuable for:

Database vendors and engine implementers building GQL-compliant property-graph databases or adding graph capabilities to existing systems.

ISO/IEC 39075:2024 PDF

Technical details

Abstract

Overview

Key topics and technical scope

Practical applications and users

Abstract

Overview

Key topics and technical scope

Practical applications and users

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