Couchbase和MS SQL Server之间的区别

1. Couchbase：
Couchbase Server是一个开放源代码，分布式，多模型，NoSQL，面向文档的数据库软件包，已针对交互式应用程序进行了优化。它也被称为Membase。它由Couchbase，Inc.开发，最初于2010年8月发布。

2. MS SQL Server：
Microsoft SQL Server是一个依赖于平台的关系数据库管理系统(RDBMS)，它既是GUI也是基于命令的软件。它支持公司IT环境中的各种事务处理，商业智能和分析应用程序。它由Microsoft Corporation开发，最初于1989年4月24日发布。它使用C和C++语言编写。

Couchbase和MS SQL Server之间的区别：

S.NO.	Couchbase	Ms SQL Server
1.	Developed by Couchbase, Inc. and initially released on August 2010.	Developed by Microsoft Corporation and initially released on April 24, 1989.
2.	Couchbase is written in C++, Erlang, C and Go languages.	MS SQL server is written in C and C++.
3.	The license for Couchbase is open source.	The license for MS SQL Server is Commercial.
4.	The primary database model for Couchbase is Document Store.	The primary database model for MS SQL Server is Relational Database.
5.	The secondary database model for Couchbase is key-value store.	The secondary database model MS SQL Server is Document Store and Graph DBMS.
6.	Couchbase is Data Schema free.	In MS SQL Server the data schema is Fixed.
7.	There is no Foreign Keys in Couchbase.	MS SQL server supports Foreign Keys.
8.	Couchbase supports Map Reduce method.	MS SQL Server does not supports Map Reduce method.
9.	Couchbase provides Eventual Consistency and Immediate Consistency methods to ensure consistency in a distributed system.	MS SQL Server only provides Immediate Consistency method to ensure consistency in a distributed system.
10.	Server operating systems for Couchbase are Linux, OS X and Windows.	Server operating systems for MS SQL Server are Linux Windows.
11.	Famous companies like Lockwood Publishing, Code Weavers, MSLGROUP, The Doyle Group, etc uses Couchbase.	Famous companies like Citi, Bank of America, UPS, etc uses MS SQL Server.