---
title: "Data Historian vs. Time Series Database"
url: https://daily.dev/posts/data-historian-vs-time-series-database-nw1qipanv
source_url: https://cratedb.com/blog/data-historian-vs-time-series-database
type: article
source: "CrateDB"
published: 2026-05-27T08:17:04.555Z
updated: 2026-05-27T08:17:29.818Z
tags: ["iot", "cratedb"]
reading_time: 8
upvotes: 0
comments: 0
language: en
---

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# Data Historian vs. Time Series Database

**[CrateDB](https://daily.dev/sources/cratedb)** · 8 min read · 0 upvotes · 0 comments

## Summary

Data historians and time series databases are often treated as competing choices for industrial data stacks, but they serve fundamentally different purposes. Historians excel at OT data collection from plant-floor sources (OPC-UA, Modbus, SCADA) with certified data integrity, while time series databases provide the analytics layer for cross-asset queries, OEE calculations, and BI tool integration. Replacing a historian with a time series database means rebuilding OT connectivity and re-certifying data integrity — a costly project that doesn't solve the actual analytics problem. The recommended architecture keeps the historian for ingestion and adds a time series database like CrateDB as the analytics layer, enabling real-time cross-plant SQL queries without disrupting existing OT infrastructure.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://cratedb.com/blog/data-historian-vs-time-series-database>

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---

Tags: [#iot](https://daily.dev/tags/iot), [#cratedb](https://daily.dev/tags/cratedb)

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