Isolation means that data used during the execution of a transaction cannot be used by a second transaction until the first one is completed. Isolation means that data used during the execution of one transaction cannot be used by another until the first one is finished.
Explanation: DBMS suspends all operations and synchronizes its files and transaction journals on a regular basis using the Check point capability. A setting that governs when and how modifications made by one action are apparent to other concurrent users and systems. The maintenance and assurance that the data in a database are proper and consistent is referred to as data integrity.
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