DBDB.io The Encyclopedia of Database Systems · Est. 2017
Login
Database of Databases

Database Entry

Azure HorizonDB

Forked Code

Microsoft Azure HorizonDB is a proprietary fork of PostgreSQL that separates compute and storage.[02]

Website
https://azure.microsoft.com/en-us/products/horizondb[01]
Developer
Country of Origin
CA, US
Start Year
2026
Project Type
Commercial
Written in
Rust
Derived From
PostgreSQL
Inspired By
Aurora
Operating System
Hosted
License
Proprietary

Database Entry

Azure HorizonDB

Forked Code

Microsoft Azure HorizonDB is a proprietary fork of PostgreSQL that separates compute and storage.[02]

Checkpoints

Consistent

Same as PostgreSQL

Compression

Naïve (Page-Level)

Same as PostgreSQL

Coordination

Centralized Coordinator

Data Model

Relational

Same as PostgreSQL

Foreign Keys

Supported

Same as PostgreSQL

Indexes

B+Tree Hash Table Inverted Index (Full Text) Block Range Index (BRIN)

Same as PostgreSQL

Isolation Levels

Read Uncommitted Read Committed Serializable Snapshot Isolation Repeatable Read

Same as PostgreSQL

Joins

Nested Loop Join Hash Join Sort-Merge Join

Same as PostgreSQL

Logging

Physical Logging

Same as PostgreSQL

Parallel Execution

Intra-Operator (Horizontal)

Same as PostgreSQL

Query Execution

Tuple-at-a-Time Model

Same as PostgreSQL

Query Interface

PL/SQL

Same as PostgreSQL

Storage Architecture

Disk-oriented

Same as PostgreSQL

Storage Organization

Log-structured

Stored Procedures

Supported

Same as PostgreSQL

System Architecture

Shared-Disk

User-Defined Functions

PL/SQL Python Perl TCL

Same as PostgreSQL

Views

Virtual Views Materialized Views

Same as PostgreSQL

Citations

2 sources
  1. Azure HorizonDB | Microsoft Azure microsoft.com
  2. https://youtu.be/EdgeqeW47_w youtu.be
Revision #3 Last Updated: