![]() ![]() Consistent – A processed transaction will never endanger the structural integrity of the database.This ensures that all data in the database is valid. Atomic – Each transaction is either properly carried out or the process halts and the database reverts back to the state before the transaction started.To explain the ACID model, it is best to start by breaking apart the acronym in its name. There must be zero tolerance for invalid states. These organizations need database systems which can handle many small simultaneous transactions. This makes it a good fit for businesses which deal with online transaction processing (e.g., finance institutions) or online analytical processing (e.g., data warehousing). The ACID database transaction model ensures that a performed transaction is always consistent. ![]() ![]() To provide further insight, we will discuss each of the models separately and then compare them. The BASE model provides high availability.The ACID model provides a consistent system.The fundamental difference between ACID and BASE database models is the way they deal with this limitation. The CAP theorem states that it is impossible to achieve both consistency and availability in a partition tolerant distributed system (i.e., a system which continues to work in cases of temporary communication breakdowns). ![]()
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