Comparison of data model and relational database model of Cassandra Database

Source: Internet
Author: User
Tags cassandra comparison

The Cassandra data model differs greatly from the model of a relational database:

relational Database model:

Data is stored in tables, data is followed by a paradigm to reduce redundancy, and tables are connected through foreign keys

Cassandra Model:

In Cassandra, the application data is present in the keyspace, which corresponds to the schema in the relational database. There are many column family in the keyspace, which corresponds to tables in the relational database. Column family consists of a set of column, and the associated column makes no difference between the row Key,row key.

Unlike relational databases, relational database tables are often connected by foreign keys, but in Cassandra, column family is not connected or query connections are not supported.

More Wonderful content: http://www.bianceng.cnhttp://www.bianceng.cn/database/extra/

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.