Transaktsioonihaldussüsteemid

Transaktsiooni is a term that can refer to several concepts depending on the context, but most commonly it relates to business, finance, and computing. In a business or financial context, a transaktsiooni is an agreement between a buyer and a seller to exchange goods, services, or financial assets for payment. This exchange is typically recorded in an accounting system to track the flow of money and value. These transactions can range from simple retail purchases to complex international trade deals.

In computing, particularly in database management, a transaktsiooni represents a sequence of operations performed as a single logical unit of work. These operations are designed to be atomic, consistent, isolated, and durable, a property known as ACID. Atomicity ensures that either all operations within the transaction are completed successfully, or none of them are. Consistency guarantees that a transaction brings the database from one valid state to another. Isolation ensures that concurrent transactions do not interfere with each other, and durability means that once a transaction is committed, its changes are permanent, even in the event of system failures.

The concept of a transaktsiooni is fundamental to modern commerce and information systems, enabling reliable and secure exchanges of value and data. Understanding the nature of a transaktsiooni is crucial for managing finances, operating businesses, and developing robust software applications.