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Polyglot persistence does not mean using multiple types of database systems within a single application
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'REPEATABLE READ' prevents other transactions from inserting new rows that match the query criteria, but it does not prevent updates or deletes
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Many database systems default to the 'READ COMMITTED' isolation level, which means that a transaction can only see committed data
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Memory reloading efficiently reuses cache memory blocks for different parts of data as the sorting process progresses.
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Ubuntu is a concurrency issue?
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An execution plan S is serializable when the serialization graph is acyclic.
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This statement accurately describes the purpose of isolation levels in SQL. They control the visibility of data changes made by concurrent transactions
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Що таке потенційний ключ відношення?
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Please, choose statements that are true:

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Відношення тільки з одним атрибутом називається
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