April 2020
Beginner to intermediate
540 pages
14h 14m
Russian
Content preview from MongoDB: полное руководство
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Нормализация и денормализация 261
ты, а не как вложенные. Также стоит рассмотреть возможность использо-
вания шаблона Подмножество (описанного в разделе «Шаблоны проекти-
рования схем»), чтобы сохранять самые последние элементы (или другие
подмножества) в документе.
Наконец, включенные поля должны быть неотъемлемой частью данных
в документе. Если поле почти всегда исключается из результатов при за-
просе документа, это хороший признак того, что он может относиться к
другой коллекции. Эти рекомендации приведены в табл. 9.1.
Таблица 9.1. Сравнение встраивания и ссылок
Встраивание лучше подходит для ... Ссылки лучше подходят для ...
Небольших вложенных ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.