Cozo database documentation

Welcome to the documentation for CozoDB, a feature-rich, transactional, time-travel-enabled, relational-graph-vector database that uses Datalog for queries, while making no performance compromises.

You can start immediately with the Tutorial, which you can follow without installing anything.

For installation instructions and language-specific APIs, please refer to the GitHub page.

Contents

• Tutorial
  • Introduction
  • First steps
  • Find values for these variables
  • Joins, made easy
  • Stored relations
  • Command blocks
  • Graphs
  • Time travel
  • Extended example: the air routes dataset
  • Importing dataset the hard way
• Queries
  • Inline rules
  • Fixed rules
  • Query options
• Stored relations and transactions
  • Stored relations
  • Chaining queries
  • Indices
  • Triggers
  • Storing large values
• Proximity searches
  • HNSW (Hierarchical Navigable Small World) indices for vectors
  • MinHash-LSH for near-duplicate indexing of strings and lists
  • Full-text search (FTS)
  • Text tokenization and filtering
• Time travel
• System ops
  • Explain
  • Ops for stored relations
  • Monitor and kill
  • Maintenance
• Types
  • Runtime types
  • Literals
  • Column types
• Query execution
  • Disjunctive normal form
  • Stratification
  • Magic set rewrites
  • Semi-naïve evaluation
  • Ordering of atoms
  • Evaluating atoms
  • Early stopping
• Tips for writing queries
  • Dealing with nulls
  • How to join relations
• Functions and operators
  • Non-functions
  • Operators representing functions
  • Equality and Comparisons
  • Boolean functions
  • Mathematics
  • Vector functions
  • Json funcitons
  • String functions
  • List functions
  • Binary functions
  • Type checking and conversions
  • Random functions
  • Regex functions
  • Timestamp functions
• Aggregations
  • Semi-lattice aggregations
  • Ordinary aggregations
• Utilities and algorithms
  • Utilities
  • Connectedness algorithms
  • Pathfinding algorithms
  • Community detection algorithms
  • Centrality measures
  • Miscellaneous
• Beyond CozoScript
  • export_relations
  • import_relations
  • backup
  • restore
  • import_from_backup
  • Callbacks
• Notes
  • Some use cases for Cozo
  • Cozo runs (almost) everywhere
  • On performance
  • Time travel in a database: a Cozo story
  • Cozo 0.5: the versatile embeddable graph database with Datalog is half-way 1.0
  • Experience CozoDB: The Hybrid Relational-Graph-Vector Database - The Hippocampus for LLMs
  • Version 0.7: MinHash-LSH near-duplicate indexing, Full-text search (FTS) indexing, Json values and update

Indices

• Index