To ensure the integrity requirement of relational databases, all transactions in them must satisfy the ACID requirements (they must be atomic, uniform, isolated, and reliable).
The first condition is "atomicity". It specifies that any transaction must be executed finland mobile database in its entirety. If at least one of its elements is not executed, the entire transaction must be cancelled. In accordance with the "uniformity" condition, all elements written to the fields of a relational database by transaction must satisfy a set of rules and restrictions, including integrity, cascades, and triggers.
The isolation condition is important for data consistency control. It is also necessary to ensure the basic independence of all transactions. According to the reliability condition, all changes made to a relational database before the transaction is completed are permanent.