Database identifiers shortened in v5

I’m reading the breaking changes documentation for migrating from v4 to v5, and I was hoping for some clarification on the shortening of database identifiers: https://docs-next.strapi.io/dev-docs/migration/v4-to-v5/breaking-changes/database-identifiers-shortened

Does this mean that it will shorten things like my api id’s and field names? Or will that be done behind the scenes when converting to database identifiers? Will my endpoint urls and queries be affected? Will collection type folder names be affected?