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  Verify split databases
After configuration, the master databases are configured as follows:
- Main magento database: 369 tables
- Magento quote database: 11 tables
- Magento sales database: 55 tables
To verify your split databases are working properly, perform the following tasks and verify that data is added to the database tables using a database tool like phpmyadmin:
| What to verify | How to verify | 
|---|---|
| quote database is working | Add items to a cart. Verify that rows have been added to your quote database's quote,quote_address, andquote_itemtables. | 
| sales database is working | Complete an order (any payment method, including check/money order). Verify that rows have been added to your sales database's sales_order_address,sales_order_item, andsales_order_paymenttables. | 
You must back up the two additional database instances manually. Magento backs up only the main database instance. The magento setup:backup --db command and Admin options do not back up the additional tables.
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