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. 微软 SQL 服务器：
Microsoft SQL Server 是一个关系数据库管理系统 (RDBMS)，它依赖于平台，并且是基于 GUI 和命令的软件。它支持企业 IT 环境中的各种事务处理、商业智能和分析应用程序。它由微软公司开发，最初于 1989 年 4 月 24 日发布。它是用 C 和 C++ 语言编写的。
Teradata 和 MS SQL Server 的区别：
| Teradata | MS SQL Server |
|---|---|
| It is developed by Teradata Corp. in 1984. | Developed by Microsoft Corporation and initially released on April 24, 1989. |
| The primary database model for Teradata is Relational DBMS | The primary database model for MS SQL Server is Relational DBMS. |
| It is written in C and C++. | It is also written in C and C++. |
| The license for Teradata is Open Source. | The license for MS SQL Server is Commercial. |
| It does not support XML data format. | It supports XML data format. |
| Teradata is schema free. | In MS SQL Server the data schema is Fixed. |
| It supports Map Reduce method. | It does not supports Map Reduce method. |
| It supports both Master-Slave Replication and Master-Master Replication. | It supports Master-Slave Replication. |
| It provide fine grained access rights according to SQL-standard. | It provides access rights for users and roles. |