1. 沙发数据库:
CouchDB 是一个开源的面向文档的 NoSQL 数据库,它使用多种格式和协议来存储、传输和处理其数据,它使用 JSON 存储数据,使用 MapReduce 作为其查询语言的 JavaScript,以及用于 API 的 HTTP。它由 Apache 软件基金会开发,最初于 2005 年发布。它是用 Erlang 编写的。
2.IBM Db2:
IBM Db2 是由 IBM 开发的一系列数据管理产品,包括数据库服务器。它是一个关系数据库管理系统 (RDBMS),支持面向对象的特性和非关系结构的 XML。 Db2 旨在高效地存储、分析和检索数据。它最初于 1983 年发布,使用 C、C++、 Java和汇编语言编写。
CouchDB 和 IBM Db2 的区别:
SR.NO | CouchDB | IBM Db2 |
---|---|---|
1 | It is developed by Apache Software Foundation in 2005. | It is developed by IBM in 1983. |
2 | CouchDB server operating systems are Android, BSD, Linux, OS X, Solaris and Windows. | Db2 server operating systems are AIX, HP-UX, Linux, Solaris, Windows and z/OS. |
3 | The primary database model for CouchDB is Document Store. | The primary database model for IBM Db2 is Relational DBMS. |
4 | It is written in Erlang language. | It is written in C, C++, Assembly language, Java languages. |
5 | It is free of data schema. | It has fixed data schema. |
6 | It do not provides ACID transactions. | It provides ACID transactions. |
7 | It does not have the concept of Foreign keys. | It has the concept of Referential Integrity and Foreign keys. |
8 | It does not supports Secondary indexes. | It supports the secondary indexes without any restrictions. |