Tranzakciókezelk

Tranzakciókezelk, often translated as transaction management, refers to the processes and mechanisms used to ensure the integrity and consistency of data operations, particularly in database systems. Its primary goal is to maintain the ACID properties of transactions: Atomicity, Consistency, Isolation, and Durability. Atomicity ensures that a transaction is treated as a single, indivisible unit of work; either all operations within it succeed, or none of them do. Consistency guarantees that a transaction brings the database from one valid state to another, adhering to all predefined rules and constraints. Isolation ensures that concurrent transactions do not interfere with each other, making it appear as if each transaction is executing sequentially. Durability ensures that once a transaction is committed, its changes are permanent and will survive system failures.

Effective transaction management involves several components. This includes mechanisms for concurrency control, such as locking or multi-version concurrency control (MVCC), to prevent conflicts between simultaneous transactions. It also involves logging and recovery procedures to ensure durability. When a transaction is initiated, it begins a sequence of operations. If all operations are successful, the transaction is committed, making its changes permanent. If any operation fails, the transaction is rolled back, undoing all changes made since its start, thus preserving the database's integrity. This systematic approach is crucial for reliable data processing in various applications, from financial systems to e-commerce platforms.