---
title: "What Is Database Synchronization? Database Sync Types"
url: https://daily.dev/posts/what-is-database-synchronization-database-sync-types-sgqrkpz1f
source_url: https://dbconvert.com/blog/what-is-database-synchronization
type: article
source: "DBconvert"
published: 2026-06-02T15:57:42.710Z
updated: 2026-06-02T15:58:04.627Z
tags: ["backend", "data-engineering", "change-data-capture"]
reading_time: 4
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# What Is Database Synchronization? Database Sync Types

**[DBconvert](https://daily.dev/sources/dbconvert)** · 4 min read · 0 upvotes · 0 comments

## Summary

Database synchronization keeps two or more databases consistent by copying inserts, updates, and deletes between them. The main sync types are insert sync (copies new rows to target), update sync (propagates changes), drop sync (removes deleted rows from target), mixed sync (combines all three), bidirectional sync (changes flow in both directions with conflict handling), and CDC replication (continuous event-based change capture with lower latency). Primary keys are essential for reliable sync. Classic sync runs as a scheduled job comparing tables, while CDC reads change events continuously for near-real-time replication.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://dbconvert.com/blog/what-is-database-synchronization>

## Similar posts on daily.dev

- [Glue Services: Part Two — Data Synchronization](https://daily.dev/posts/glue-services-part-two-data-synchronization-zqozfuwbr) · ITNEXT · 0 upvotes · 0 comments
- [Cache consistency: strategies to keep data fresh](https://daily.dev/posts/cache-consistency-strategies-to-keep-data-fresh-o2gww6sna) · Redis · 6 upvotes · 0 comments
- [Syncing Data: Choosing the Right Strategy](https://daily.dev/posts/syncing-data-choosing-the-right-strategy-gojdurxsf) · Atomic Spin · 27 upvotes · 1 comments

---

Tags: [#backend](https://daily.dev/tags/backend), [#data-engineering](https://daily.dev/tags/data-engineering), [#change-data-capture](https://daily.dev/tags/change-data-capture)

[View this post on daily.dev](https://daily.dev/posts/what-is-database-synchronization-database-sync-types-sgqrkpz1f)