# SQL flash cards: Freelancer level

3 SQL terms at the Freelancer level, as flash cards.

Updated: September 27, 2026

- [Study these as flash cards](https://www.ask-codey.com/decks/sql/4/flash)
- [Play Memory with them](https://www.ask-codey.com/games/memory?category=sql&level=4)

## Terms in this deck

- [Deferrable Constraint](https://www.ask-codey.com/glossary/deferrable-constraint): A constraint whose checking may be postponed until transaction completion.
- [Initially Deferred](https://www.ask-codey.com/glossary/initially-deferred): A constraint mode starting each transaction with checking postponed until commit.
- [Initially Immediate](https://www.ask-codey.com/glossary/initially-immediate): A constraint mode starting each transaction with checking performed after each statement.

[Read them in the glossary](https://www.ask-codey.com/glossary/subjects/sql/freelancer)

Source: https://www.ask-codey.com/decks/sql/freelancer