Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about the difference between RDBMS and NoSQL. Many people may not know much about it. In order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

To put it simply:

What is a relational database?

Built according to the relational model, there is a correlation between different tables or libraries.

What is a non-relational database?

There is no correlation between different tables or libraries, and it is based on the non-relational model.

The respective characteristics of relational database and non-relational database:

RDBMS:

Two-dimensional table

Data access through SQL

Strong in data security

NoSQL:

Pay attention to the characteristics of high performance, high concurrency and flexibility

First of all, let's talk about their advantages and disadvantages:

Powerful query function-strong consistency-secondary index: advantages of relational type, disadvantages of non-relational type

Flexible mode-- scalability-- performance: advantages of non-relational form, disadvantages of relational type

Classification of NoSQL and typical products:

KV storage: Memcached, Redis

Column storage (column-oriented): HBASE (Sina, 360), Cassandra (200 server clusters)

Document database (document-oriented): MongoDB (NoSQL closest to a relational database)

Graphics storage (Graph): Neo4j

After reading the above, do you have any further understanding of the difference between RDBMS and NoSQL? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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