1. MariaDB：
它是一个开源关系数据库管理系统(RDBMS)，是广泛使用的MySQL数据库技术的兼容即插即用替代品。它由MariaDB基金会开发，最初于2009年10月29日发布。MariaDB具有大量新功能，因此在性能和面向用户方面比MySQL更好。
2. Teradata：
它是Teradata Corp.生产的RDBMS。它用于管理大型数据仓库操作。 Teradata Corporation是与数据库和分析相关的软件，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量。
MariaDB和Teradata之间的区别：
| SR.NO | MariaDB | Teradata |
|---|---|---|
| 1 | It is developed by MariaDB Foundation in 2009. | It is developed by Teradata Corp. in 1984. |
| 2 | MariaDB server operating systems are FreeBSD, Linux, Solaris and Windows. | Teradata server operating systems are Linux, hosted. |
| 3 | The primary database model for MariaDB is Relational DBMS. | The primary database model for Teradata is Relational DBMS. |
| 4 | It is a open source software framework. | It runs world’s largest commercial databases. |
| 5 | Famous companies like CUNY, Accenture, Docplanner, Grooveshark, Northrop Grumman, uses MariaDB. | Famous companies like Cognizant, Capgemini, aws, Cisco, Citibank, etc use Teradata. |
| 6 | It support ACID Transactions. | It also support ACID transactions. |
| 7 | It provides us with Immediate Consistency method to ensure consistency in a distributed system. | It also provides us with Immediate Consistency method to ensure consistency in a distributed system. |
| 8 | It uses ADO.NET, JDBC, ODBC, Proprietary native APIs. | It uses .NET Client API, HTTP REST, JDBC, JMS Adapter ODBC, OLE DB as APIs. |
| 9 | It supports C, C#, C++, Go, Tcl, Perl, D, Erlang, Java, JavaScript, PHP, Python, Ruby. | It supports C, C++, Cobol, Java (JDBC-ODBC), Perl, PL/1, Python, R, Ruby. |
| 10 | It provides access rights for users and roles. | It provide fine grained access rights according to SQL-standard. |