1.Altibase :
它是一个开源的关系数据库模型系统(RDBMS)。 Altibase 的第一个版本称为 Spiner，于 1999 年发布。它是一个企业级、内存、混合、高性能 RDBMS。它由 Altibase 公司制造。它支持完整的 SQL 标准、功能和多版本并发控制 (MVCC)，还实现了模糊和乒乓检查点。
2. 亚马逊简单数据库：
它是亚马逊托管的简单数据库服务，数据存储在亚马逊云中。 Amazon 是一项网络服务，用于实时对结构化数据运行查询。这个数据库是由 Amazon.com 用 Erlang 编写的。它具有以下特点——高可用性和灵活性，很少或没有管理负担。
Altibase 和 Amazon SimpleDB 的区别：
| S.NO. | Altibase | Amazon SimpleDB |
|---|---|---|
| 1. | Developed By Altibase in 1999. | Developed By Amazon in 2007. |
| 2. | It is an enterprise-grade, high-performance RDBMS. | It is a hosted simple database service by Amazon, with the data stored in the Amazon Cloud. |
| 3. | The License of Altibase is an Open Source. | The License of Amazon SimpleDB is commercial. |
| 4. | Server operating systems for Altibase are AIX, HP-UX, and Linux. | In Amazon SimpleDB, Hosted server operating systems. |
| 5. | Its Primary database model is Relational DBMS. | Its primary database model is the Key-value store. |
| 6. | It stored procedures and stored functions. | It does not support the Server-side scripting. |
| 7. | The partitioning can be done with Sharding. | It does not support partitioning methods. |
| 8. | It uses ANSI SQL-92 as a query language. | It does not support the SQL query language. |
| 9. | It supports the ACID property. | It does not support the ACID property. |
| 10. | It provides the concept of Referential Integrity. Hence, no Foreign Keys. | It does not provide the concept of Referential Integrity. Hence, no Foreign Keys. |
| 11. | It is not available as a cloud service. | It is available as a cloud service. |
| 12. | The programming languages supported are C, C++, and Java. | The programming languages supported are .Net, C, C++, Erlang, Java, PHP, Python, Ruby, and Scala. |