AgensGraph
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  • v2.18 (latest)
  • v2.17
  • v2.16
  • v2.15
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  • Get Started
    • What AgensGraph is
    • Install AgensGraph
    • The example dataset
    • Your first query
  • Concepts
    • The property graph model
    • How a graph is stored
    • Label inheritance
    • Cypher, GQL and SQL
  • Querying
    • Reading a graph
    • Writing a graph
    • Composing a query
    • Paths
    • Indexes and constraints
    • Promoting a property to a column
    • Combining SQL and Cypher
    • Tuning a query
  • Reference
    • Syntax
    • Data types
    • Clauses
      • MATCH
      • OPTIONAL MATCH
      • WHERE
      • LOAD FROM
      • RETURN
      • WITH
      • LET
      • ORDER BY
      • SKIP and LIMIT
      • CREATE
      • INSERT
      • MERGE
      • SET
      • REMOVE
      • DELETE
      • UNWIND
      • FOR
      • FILTER
      • NEXT
      • FINISH
      • UNION
      • CALL
      • CALL … YIELD
      • CALL { subquery }
      • OPTIONAL CALL
      • Subquery value expressions
    • Data Definition
      • CREATE GRAPH
      • DROP GRAPH
      • CREATE VLABEL
      • CREATE ELABEL
      • ALTER VLABEL and ALTER ELABEL
      • DROP VLABEL and DROP ELABEL
      • CREATE PROPERTY INDEX
      • DROP PROPERTY INDEX
      • REINDEX VLABEL and REINDEX ELABEL
      • CREATE CONSTRAINT
      • DROP CONSTRAINT
    • Functions
      • All functions
      • Aggregate functions
      • Predicate functions
      • Scalar functions
      • List functions
      • String functions
      • Numeric functions
      • Path functions
      • Type conversion functions
      • jsonb operators and functions
    • Server settings
    • The agens client
  • Guides
    • Loading data
    • Vector search
      • Overview
      • Installing pgvector
      • Example data
      • Similarity search
      • Indexing with HNSW
      • Indexing a promoted column
      • GraphRAG
    • Full-text search
      • Overview
      • Example data
      • Searching a text property
      • Ranking results
      • Exact-term matching
      • Indexing with GIN
      • Indexing a promoted column
      • GraphRAG
    • Hybrid search
      • Overview
      • Reciprocal Rank Fusion
      • Example data
      • The hybrid query
      • Indexing both arms
      • Tuning
      • GraphRAG
    • AI and LLM integrations
      • Overview
      • LangChain
      • LlamaIndex
      • LightRAG
      • cognee
      • MCP servers
      • Without a framework
  • Drivers and client libraries
    • The Python driver
    • Other languages
    • Connection and parameters
    • AI and LLM integrations
      • Overview
      • LangChain
      • LlamaIndex
      • LightRAG
      • cognee
      • MCP servers
      • Without a framework
  • Operations
    • Deployment
    • Configuration
    • Security
    • Backup and recovery
    • Server-side tools
  • System Catalogs
    • Graph catalogs
    • Graph views
    • Graph metadata
  • Release Notes
    • AgensGraph 2.18.6.0
    • Upgrading to 2.18
    • Upgrade walkthrough
    • AgensGraph 2.17.0
  • Appendixes
    • GQL conformance
    • Cypher compatibility
    • Keywords
    • Error codes
    • Limits
    • Glossary
  1. AgensGraph /
  2. Concepts
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Concepts#

What a property graph is, how AgensGraph stores one in PostgreSQL, and how its three query languages relate to each other.

  • The property graph model
  • How a graph is stored
  • Label inheritance
  • Cypher, GQL and SQL
Previous
Your first query
Next
The property graph model

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