> ## Documentation Index > Fetch the complete documentation index at: https://artie.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Schema changes > Stay up to date on schema changes in your source database. ## Notification settings By default, every user has schema change notifications enabled. You can toggle this setting by going to [Settings > My settings](https://app.artie.com/settings?tab=user) and altering the `Receive table change notifications` setting. ## Schema-change detection Artie checks source databases for table and column changes and sends a summary only when it detects changes. By default, you receive the summary by email. You can also [configure Slack or Teams notifications](/docs/account/enabling-notifications). Changes Artie detects include: 1. Tables added 2. Tables removed 3. Tables changed * Columns added * Columns removed * Columns altered, including data type, default value, and not-null constraint You can also run a check from a pipeline's overview page. The check runs in the background. If the pipeline has **Auto-replicate new tables** or **Auto-enable history mode for new tables** enabled, eligible newly discovered tables can be added automatically. Example of what schema changes looks like ## Automatically apply supported schema changes Schema-change notifications report what changed in the source. They do not change the destination schema. A company admin can separately enable **Automatically apply supported schema changes**. That reconciliation job compares eligible source and destination tables and applies supported differences. It runs daily between 7:00 and 8:00 AM Pacific Time, and eligible pipeline redeploys can also queue reconciliation. See [Schema evolution](/docs/guides/artie/schema-evolution#automatic-schema-changes) for supported sources and changes, eligibility requirements, on-demand reconciliation, and the two-hour cooldown.