Практикум. Сортировка в SQL, ограничения
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▫️Ограничение NOT NULL
▫️Первичные ключи
▫️Создаем другие таблицы
▫️Отношения (relationships)
▫️Ограничения-проверки
▫️Пробелы и отступы
▫️Комментарии
▫️Особенности MySQL
▫️Заполнение данными
▫️Выбираем данные из отдельных столбцов
▫️Сортировка ORDER BY
BY SQL для тестировщика
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
You guessed it – the internet is your friend. A good place to start looking for Telegram channels is Reddit. This is one of the biggest sites on the internet, with millions of communities, including those from Telegram.Then, you can search one of the many dedicated websites for Telegram channel searching. One of them is telegram-group.com. This website has many categories and a really simple user interface. Another great site is telegram channels.me. It has even more channels than the previous one, and an even better user experience.These are just some of the many available websites. You can look them up online if you’re not satisfied with these two. All of these sites list only public channels. If you want to join a private channel, you’ll have to ask one of its members to invite you.
SQL для тестировщика from ms