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<p>or more, executed with time overlap, can access the same data, e.g., virtually in any general-purpose database system. Consequently, a vast body of related research has been accumulated since database systems emerged in the early 1970s. A well established concurrency control <a href="page.php?w=Scientific_theory">theory</a> for database systems is outlined in the references mentioned above: <a href="page.php?w=Serializability">serializability theory</a>, which allows to effectively design and analyze concurrency control methods and mechanisms.</p><p>
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