1. 数据：
Teradata 是 Teradata 公司生产的 RDBMS，用于管理大型数据仓库操作。 Teradata Corporation 是数据库和分析相关软件、产品和服务的提供商。它接受来自多个客户端应用程序的请求数。
2. 口袋数据库：
PouchDB 是一个开源的 NoSQL 内联数据库。它是在 CouchDB 之后设计的，CouchDB 是一个支持 npm 的 NoSQL 数据库。它是用 JavaScript 语言编写的。由于 PouchDB 驻留在浏览器中，因此无需通过网络执行查询，因此速度非常快。它在浏览器中使用 IndexedDB 和 WebSQL 在本地存储数据。
Teradata 和 PouchDB 的区别：
| Teradata | PouchDB |
|---|---|
| It is developed by Teradata Corp. | It is developed by Apache Software Foundation. |
| It was released in 1984. | It was released in 2012. |
| Teradata server operating systems are Linux, hosted. | PouchDB server operating systems are Linux, OS X and Windows. |
| The primary database model for Teradata is Relational DBMS. | The primary database model for PouchDB is Document Store. |
| It support ACID transactions. | It do not provides ACID transactions. |
| It is written in Javascript language. | It is written in C, C++ language. |
| It provide fine grained access rights according to SQL-standard. | It provides access rights for users and roles. |
| It supports C, C++, Cobol, Java (JDBC-ODBC), Perl, PL/1, Python, R, Ruby. | It supports Erlang, Java, JavaScript. |
| It provides us with Immediate Consistency method to ensure consistency in a distributed system. | It provides us with Eventual and Immediate Consistency method to ensure consistency in a distributed system. |