pessimistic locking

pessimistic locking
"пессимистическое блокирование" (стратегия блокирования набора данных, при которой страница, содержащая изменяемую запись, блокируется на все время внесения изменений в запись пользователем и не доступна для редактирования другим пользователям, см. optimistic locking)

Большой англо-русский и русско-английский словарь. 2001.

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