From Magento 2.3, use db_schema.xml to create a new table for the database instead of written InstallSchema PHP class. The new database table creation/updating concept in Magento 2.3 is called declarative schema.
From Magento 2.3 You don’t need to create InstallSchema.php and UpgradeSchema.php Continue reading “How to create a new database table using declarative schema in Magento 2.3?”