HeliosDB User Documentation Index

Multi-Model Database Server

I Want To…	Go To
Get started quickly	Quick Start Guide
Deploy to production	Production Deployment
Migrate from PostgreSQL	PostgreSQL Migration
Migrate from MongoDB	MongoDB Migration
Migrate from Oracle	Oracle Migration
Use AI/ML features	AI Features
Optimize performance	Performance Tuning
Configure security	Security Reference
Scale the database	Scaling Operations Runbook

1. Getting Started

First Steps

Quick Start Guide - 5-minute setup
Getting Started - Comprehensive introduction
Configuration Guide - System configuration
Configuration Quick Reference
Connecting to HeliosDB - Connection methods and clients
Data Types Reference - Supported data types

Installation & Deployment

Docker Deployment - Container setup
Production Deployment - Full production guide
Deployment Runbook - Operational procedures

Tutorials

2. Protocols & Migration

Production SQL Protocols

PostgreSQL 17 - 100% wire protocol compatible (Primary)
- Advisory Locks Guide
MySQL - 90%+ wire protocol v10 compatible
Snowflake - planned (the HTTP gateway answers /snowflake/ with 501 today)
SQL Commands Reference

NoSQL Protocols

MongoDB - listener connects and authenticates (SCRAM-SHA-256); reads and writes of HeliosDB tables are planned; GridFS and capped collections are planned
Redis - RESP listener with an in-memory keyspace that is not persisted
Cassandra CQL - listener connects and authenticates; reads and writes of HeliosDB tables and DataStax-driver connections are planned
- Cassandra Quick Start
ClickHouse - planned (no listener today)
- ClickHouse Quick Start

API Protocols

GraphQL - Full GraphQL with subscriptions and federation
- GraphQL Quick Start
HTTP/REST - RESTful API with OpenAPI 3.0 spec

Oracle Compatibility

Oracle 23ai Compatibility Guide - what the Oracle listener runs today and what to rewrite
Oracle Quick Start
DBMS packages, hierarchical queries, PIVOT/UNPIVOT support; PL/SQL execution through the Oracle listener is on the roadmap

Migration Guides

Source Database	Migration Guide
PostgreSQL	Migration Guide
MongoDB	Migration Guide
Cassandra	Migration Guide
Oracle	Migration Guide
Redis	Migration Guide
MySQL	Migration Guide
SQL Server	Migration Guide
SQLite	Migration Guide

Migration Toolkit Guide - Comprehensive migration tools
Migration Overview
Zero-Code Developer Guide - Zero-code protocol migration

3. Core Features

SQL & Transactions

Transactions User Guide - Comprehensive transaction guide
EXPLAIN Plan Guide - Query analysis and optimization
SQL Command Extensions
Query Optimization

MVCC (Multi-Version Concurrency Control)

Storage & Indexing

Index Types Comparison - B-Tree, LSM-Tree, hybrid indexes
Compaction Strategy Guide
LSM Tuning Guide

Time-Travel & Historical Queries

Time-Travel Debugging Guide - Historical data queries

4. Advanced Features

Time-Series Data

Vector Search & Embeddings

Multimodal Vector Search - 8-modality support
HNSW indexing with 99%+ recall

Materialized Views

Materialized Views Runbook

Automated ETL

Graph & GraphRAG

Full-Text Search

Full-Text Search Tuning Guide

Geospatial

Geospatial Operations Guide

Sharding & Multi-Region

Streaming & Real-Time Analytics

Change Data Capture (CDC)

5. AI/ML Features

Natural Language Queries

Performance Optimization
Production Deployment
SQL-Native RAG - Retrieval-augmented generation
NL2SQL User Guide

Machine Learning Integration

Federated Learning Guide - Privacy-preserving ML
Advanced ML Integration Guide
AI Schema Architect - AI-powered schema design
Tier 2/3 AI/ML User Guide - Neural planner, schema AI, RL cache, and more

Blockchain & CRDT

6. Operations & Administration

Operational Runbooks

Runbook	Description
Scaling Operations	Horizontal and vertical scaling procedures
Multi-Region Replication	Cross-region replication setup and management
Point-in-Time Recovery (PITR)	Backup and recovery procedures
Schema Evolution	Online schema changes and migrations
Backup & Restore	Backup and restore operations
Database Maintenance	Routine maintenance tasks
Incident Response	Incident handling procedures
Performance Troubleshooting	Performance issue diagnosis
GPU Operations	GPU resource management
Multi-Region Operations	Multi-region deployment operations

High Availability

High Availability Operational Procedures
Multi-Master Replication Operations
Replication Operations Guide
HeliosDB Full runs as a single server. Multi-region replication and automatic failover are planned with Full clustering, so the replication guides above describe planned features.
Placed in front of Full, HeliosProxy reconnects sessions, restores tracked SET state and, depending on tr_mode, replays safe reads or an uncommitted transaction; a COMMIT with unknown outcome is not retried. Session migration and cursor restore are planned.

Backup & Recovery

Monitoring & Health

Multi-Tenancy

Autonomous Operations

Autonomous Database Operations Guide

7. Performance Tuning

Query Optimization

Workload Management Components

8. Security

Security Configuration

Authentication & Authorization

Key Management

SQL Injection Protection

Data Protection

Encryption

TLS 1.3 in transit
AES-256 at rest
Homomorphic encryption (beta)
Post-quantum cryptography ready

Compliance

Backup Encryption Regulatory Compliance Matrix
SOC 2 Type II ready
GDPR compliant
HIPAA compliant
PCI-DSS ready

9. Integrations

Cloud & Data Catalogs

Lakehouse Integration Guide
AWS, GCP, Azure native integrations
Apache Iceberg and Delta Lake support (planned)

Streaming & CDC

Change-event log (SHOW CDC EVENTS); CDC connectors planned
Kafka and Pulsar integration (planned)

External Data

Federation Quick Start

Client Libraries

Storage Attribution

Edge Computing

10. Multi-Model Data

Document Store

Data Quality

Data Quality Management Guide

11. Reference Documentation

Quick References by Category

Quick Starts Index - All quick start guides

Architecture & Design

FAQ & Troubleshooting

Frequently Asked Questions

Feature Highlights

Highlighted Capabilities

Capability	Status
Quantum-Inspired Query Optimization	Planned
Neuromorphic Pattern Recognition	Planned
Cognitive Database Agents	Planned
WASM Polyglot Procedures	Planned
ML-Based Self-Healing	Planned
Agentic NL2SQL	Planned
Homomorphic Encryption	Planned
Federated Learning	Planned
GPU Query Engine	NVIDIA CUDA in builds on request; not enabled in the public release build (ROCm planned)
Multi-Protocol Gateway	7 database wire protocols + HTTP gateway (MongoDB, Cassandra and SQL Server table access planned)
Oracle 23ai Compatibility	Core data access over the Oracle listener; Oracle-specific syntax and PL/SQL partly need rewriting
WASM Edge Computing	Planned

Performance Benchmarks

Benchmark figures measured on representative fixtures are published on benchmarks; reproduce them on your own hardware before relying on them. HeliosDB Full runs as a single server, so clustering and availability targets are planned, and so are graph traversal SQL functions.

Support

Feedback

Documentation feedback: support@heliosdb.com

HeliosDB - AI-assisted, multi-model distributed database