Properties of the transaction can be summarized as ACID Properties.
1. Atomicity
A transaction consists of many steps. When all the steps in a transaction gets completed, it will get reflected in DB or if any step fails, all the transactions are rolled back.
2. Consistency
The database will move from one consistent state to another, if the transaction succeeds and remain in the original state, if the transaction fails.
3. Isolation
Every transaction should operate as if it is the only transaction in the system
4. Durability
Once a transaction has completed successfully, the updated rows/records must be available for all other transactions on a permanent basis