Where are the Magento delivery type files located?

Question

PHP

Hello toaster
Where are these notorious files located, and where is the record of them in the database?

Answer 1

These files are "smeared" over the file structure.
Here are the files responsible for displaying the list of shipping methods:
/app/code/core/Mage/Checkout/Block/Onepage/Shipping
Here are the files of basic shipping methods:
/app/code/core/Mage/Shipping
Here are the files that expand the basic list
/app/code/core/Mage/Usa
In general, delivery methods (third-party) are separate modules/extensions with all the consequences.
About records in a DB. Look for traces in the "sql" folder of the corresponding extension. For example here:
- /app/code/core/Mage/Usa/sql/usa_setup
- /app/code/core/Mage/Shipping/sql/shipping_setup