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A developer defined a new table in db.schema.xml while creating a new module. What should be done to allow the removal of columns from the database when deleting them from db.schema.xml?
Correct Answer: A
If a developer wants to allow the removal of columns from the database when deleting them from db.schema.xml, they need to define the removable columns in the db_schema_whitelist.json file. This file will tell Magento which columns can be removed from the database. To allow columns to be removed from the database when they are deleted from db_schema.xml, they must be listed in the db_schema_whitelist.json file. This file acts as a reference for which database schema elements are safe to modify or delete, providing a safeguard against unintentional data loss during schema updates.