ACID properties: Atomicity (all-or-nothing), Consistency (valid state to valid state), Isolation (concurrent transactions), Durability (committed changes persist)

Transaction commands: BEGIN/START TRANSACTION (start), COMMIT (save changes), ROLLBACK (undo changes), SAVEPOINT (partial rollback)

Error handling: TRY-CATCH blocks, exception handling, automatic rollback on errors, transaction state management

Savepoints: Create checkpoints within transaction, rollback to specific savepoint, nested transaction simulation

Transaction isolation: Read uncommitted, read committed, repeatable read, serializable levels and their trade-offs

Deadlock prevention: Lock ordering, timeout settings, retry logic, deadlock detection and resolution

Transaction best practices: Keep transactions short (< 1 second), minimize locks, handle errors gracefully, avoid user interaction

Real-world patterns: Money transfer (bank accounts), order placement (inventory + payment), distributed transactions (microservices)

ACID properties: Atomicity (all-or-nothing), Consistency (valid state to valid state), Isolation (concurrent transactions), Durability (committed changes persist)

Transaction commands: BEGIN/START TRANSACTION (start), COMMIT (save changes), ROLLBACK (undo changes), SAVEPOINT (partial rollback)

Error handling: TRY-CATCH blocks, exception handling, automatic rollback on errors, transaction state management

Savepoints: Create checkpoints within transaction, rollback to specific savepoint, nested transaction simulation

Transaction isolation: Read uncommitted, read committed, repeatable read, serializable levels and their trade-offs

Deadlock prevention: Lock ordering, timeout settings, retry logic, deadlock detection and resolution

Transaction best practices: Keep transactions short (< 1 second), minimize locks, handle errors gracefully, avoid user interaction

Real-world patterns: Money transfer (bank accounts), order placement (inventory + payment), distributed transactions (microservices)