## Notes Stands for - Atomicity - Consistency - Isolation - Durability ## Atomicity Means "all or nothing", aka all updates/changes must be successful, or none at all. ## Consistency Means that updates must not violate any integrity constraints, like only using valid numbers or string length. ## Isolation Two transactions cannot happen at the same time otherwise they might modify the same row and each database thread would get different copies of data. ## Durability A committed transaction will survive permanently, even if the system goes down.