Ответ: Phantom reads — это явление, при котором транзакция читает данные, которые были
В отличие от других аномалий, таких как dirty reads или non-repeatable reads, phantom reads возникают, когда результаты запроса изменяются в
Для предотвращения phantom reads используется уровень изоляции
BY Библиотека собеса по Java | вопросы с собеседований
n the U.S. people generally use Bitcoin as an alternative investment, helping diversify a portfolio apart from stocks and bonds. You can also use Bitcoin to make purchases, but the number of vendors that accept the cryptocurrency is still limited. Big companies that accept Bitcoin include Overstock, AT&T and Twitch. You may also find that some small local retailers or certain websites take Bitcoin, but you’ll have to do some digging. That said, PayPal has announced that it will enable cryptocurrency as a funding source for purchases this year, financing purchases by automatically converting crypto holdings to fiat currency for users. “They have 346 million users and they’re connected to 26 million merchants,” says Spencer Montgomery, founder of Uinta Crypto Consulting. “It’s huge.”
Библиотека собеса по Java | вопросы с собеседований from us