Системы управления реляционными базами данных являются ключевым компонентом многих веб-сайтов и приложений. Они предоставляют структурированный способ хранения, организации и доступа к информации. PostgreSQL, или Postgres, — это система управления…
O MongoDB é um banco de dados de documento NoSQL de código aberto e gratuito usado habitualmente em aplicativos Web modernos. Ao seguir este tutorial, você instalará o MongoDB em um servidor Ubuntu 20.04 usando os repositórios APT padrão. Você também aprenderá como gerenciar seus serviço e habilitar, de maneira opcional, o acesso remoto.
When working on a large SQL project, you must maintain the accuracy and consistency of data across all tables using foreign keys. This is where referential integrity comes into play. Referential integrity ensures all data references are valid in SQL and prevents inconsistent entries or orphaned records. In this tutorial, you’ll enforce referential integrity with foreign keys on your database.
MongoDB is a free and open-source NoSQL document database used commonly in modern web applications. By following this tutorial you’ll install MongoDB on an Ubuntu 20.04 server using the default APT repositories. You’ll also learn how to manage its service and optionally enable remote access.
In the second part of our Practical Introduction to Laravel Eloquent Series, you’ll learn how to insert records in the database using Eloquent models. One of the biggest advantages of using an ORM system is the ability to manipulate rows in a database table as objects within your codebase. With Eloquent, as with other ORMs, the object itself provides methods that can be used to persist it to the database, saving you the work of writing SQL statements.
Предыдущая версия данного руководства была написана Мелиссой Андерсон. MongoDB (или Mongo) — это документоориентированная база данных с открытым исходным кодом, используемая во…
O Redis é um datastore ou armazenamento de dados open-source de chave-valor na memória. As chaves Redis são persistentes por padrão, o que significa que o servidor Redis continuará armazenando-as, a menos que sejam excluídas manualmente. No entanto, pode…
O autor selecionou o Computer History Museum para receber uma doação como parte do programa Write for DOnations. Muitos aplicativos acumulam dados para análises mais detalhadas como, por exemplo, os sistemas de…
Les systèmes de gestion de bases de données relationnelles constituent un élément clé de nombreux sites Web et applications. Ils offrent un moyen structuré de stocker les informations, de les organiser et d’y accéder. PostgreSQL, ou Postgres,…
Flask is a framework for building web applications using the Python language, and SQLite is a database engine that can be used with Python to store application data. In this tutorial, you’ll modify items in an application built using Flask and SQLite with a One-to-Many relationship.
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