Learning how race conditions impact the transaction integrity of financial systems
Earlier in this chapter, we mentioned that PostgreSQL transactions have the ACID properties of atomicity, consistency, isolation, and durability. These qualities ensure that transactions are handled consistently and dependably. Let’s take a moment to discuss these in detail:
- Atomicity: A database is said to be atomic when it needs the entire set of transactions to succeed for the changes to be reflected in the database. If one of the smaller operations fails, the entire operation will fail. But if all the tasks succeed, the entire operation will succeed and be reflected in the database.
- Consistency: A database is consistent when the data adheres to the rules and relationships established in the database. Only changes that keep the data in a valid state should be made during a transaction. If the transaction is successful, it changes the database’s valid state to another. If...
