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📜  敏捷数据科学-SQL与NoSQL

📅  最后修改于: 2021-01-23 05:49:55             🧑  作者: Mango

本教程的重点是遵循敏捷方法，减少步骤数，并实施更多有用的工具。要了解这一点，重要的是要了解SQL和NoSQL数据库之间的区别。

大多数用户都知道SQL数据库，并且对MySQL，Oracle或其他SQL数据库有很好的了解。在过去的几年中，NoSQL数据库被广泛采用来解决各种业务问题和项目要求。

差异Sql Nosql

下表显示了SQL和NoSQL数据库之间的区别-

SQL NoSQL
SQL databases are mainly called Relational Database Management system (RDBMS). NoSQL database is also called documentoriented database. It is non-relational and distributed.
SQL based databases includes structure of table with rows and columns. Collection of tables and other schema structures called database. NoSQL database includes documents as major structure and the inclusion of documents is called collection.
SQL databases include predefined schema. NoSQL databases have dynamic data and include unstructured data.
SQL databases are vertical scalable. NoSQL databases are horizontal scalable.
SQL databases are good fit for complex query environment. NoSQL do not have standard interfaces for complex query development.
SQL databases are not feasible for hierarchal data storage. NoSQL databases fits better for hierarchical data storage.
SQL databases are best fit for heavy transactions in the specified applications. NoSQL databases are still not considered comparable in high load for complex transactional applications.
SQL databases provides excellent support for their vendors. NoSQL database still relies on community support. Only few experts are available for setup and deployed for large-scale NoSQL deployments.
SQL databases focuses on ACID properties – Atomic, Consistency, Isolation And Durability. NoSQL database focuses on CAP properties – Consistency, Availability, and Partition tolerance.
SQL databases can be classified as open source or closed source based on the vendors who have opted them. NoSQL databases are classified based on the storage type. NoSQL databases are open source by default.

为什么NoSQL敏捷?

上面的比较表明NoSQL文档数据库完全支持敏捷开发。它是无模式的，并且不完全专注于数据建模。相反，NoSQL推迟了应用程序和服务，因此开发人员对如何建模数据有了更好的了解。 NoSQL将数据模型定义为应用程序模型。

比较节目

MongoDB安装

在本教程中，我们将重点放在MongoDB的示例上，因为它被认为是最好的“ NoSQL模式”。

Mongodb首先Mongodb SecondMongodb第三蒙哥德第四蒙哥德第五