tranzákció

A tranzakció, in a general sense, refers to an exchange or interaction between two or more parties. In the context of finance and commerce, a tranzakció specifically denotes a business deal or an agreement that results in a change of ownership or a financial settlement. This can include the buying and selling of goods or services, the transfer of money, or the execution of contracts. Each tranzakció typically involves identifiable parties, a clear objective, and a record of the exchange.

In computing, particularly in database systems, a tranzakció has a more precise definition. It is a sequence of operations performed as a single logical unit of work. These operations must adhere to the ACID properties: Atomicity, Consistency, Isolation, and Durability. Atomicity ensures that all operations within the tranzakció are completed successfully, or none of them are. Consistency guarantees that a tranzakció brings the database from one valid state to another. Isolation means that concurrent tranzakció cannot interfere with each other. Durability ensures that once a tranzakció is committed, it remains so even in the event of system failure. This strict definition is crucial for maintaining data integrity in complex systems.