What Are Safe Patterns for Online Schema Changes vs. Offline Migrations?

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What Are Safe Patterns for Online Schema Changes vs. Offline Migrations?

Safe patterns for online schema changes involve strategies (like the expand-and-contract approach) to update a database schema without downtime by making incremental, backward-compatible changes, whereas offline migrations rely on taking the system offline during a maintenance window to apply schema updates in one big batch.

Understanding Schema Changes and Migrations

A database schema change means altering the structure of a [database](https://www.designgurus

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