As Magento official document, Magento doesn't support anything other than MySQL or MariaDB.
Is there any tool or workaround can we use to make our Magento site compatible with Microsoft SQL or Oracle Database 19c or Sybase 16?
much appreciated your support.
Magento supports the "Microsoft SQL or Oracle Database". But if you are using the "MySQL OR MariaDB" the database query task is running smoothly as compared to other databases available on market.
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Magento uses PHP as a scripting language and MySQL for the database. Database: MySQL 5.6 (Oracle or Percona). PHP version: PHP 5.4, PHP 5.5 or above.