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atomicity, consistency, isolation, durability (Internet) (ACID)

In order to use the Internet for business activities, it must meet certain requirements so that transactions are executed correctly and errors in the process flow are corrected automatically. This involves compliance with certain criteria that must be in place for error-free online transactions. For this purpose, the ACID paradigms have been defined, which form the prerequisites for transactions on the Internet. ACID stands for atomicity, consistency, isolation and durability.

Atomicity is characterized by the statement "all or nothing". This means that transactions move from an originating state to a result state; they cannot be shared and either complete successfully or are aborted. If aborted, no change is made to the database. The systems involved in the process are restored to their initial state.

Consistency is about the integrity and plausibility of the datasets. These are kept in a consistent state until the transaction is completed and are transferred to another consistent state when the transaction takes place. To prevent multiple transactions from being executed at the same time, locking mechanisms are in place to prevent simultaneous access and manipulation of a data set.

Isolation means that transactions run completely separately from each other. The result and its effects can only be seen after a transaction has been completed. Multiple transactions running in parallel have no interrelationship with each other.

The durability of transactions describes their lasting effect. Once a transaction has been carried out, the result remains permanent until the next transaction. For example, in the case of a money transaction, the account balance remains until the next transaction.

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Englisch: atomicity, consistency, isolation, durability (Internet) - ACID
Updated at: 08.05.2013
#Words: 259
Links: indium (In), order, Internet, process, compliance
Translations: DE
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