The following below Database Tables store Cart Price Rules
salesrule
salesrule_coupon
salesrule_coupon_aggregated
salesrule_coupon_aggregated_order
salesrule_coupon_aggregated_updated
salesrule_coupon_usage
salesrule_customer
salesrule_customer_group
salesrule_label
salesrule_product_attribute
salesrule_website
Magento 2 All Database Tables [500 & more Tables]
Which Magento 2 Database Tables Store Sales Order Data
Which Magento 2 Database Tables Store Sales Invoice Order Data
Which Magento 2 Database Tables Store Sales Tax and Its related Data
Which Magento 2 Database Tables Store Catalog Price Rules
Which Magento 2 Database Tables Store Shopping Cart Items
Which Magento 2 Database Table Store Sales Payment Transaction
Which Magento 2 Database Table store Sales Paypal Settlement Report
Which Magento 2 Database Table store Sales Paypal Payment Transaction