1. Altibase：
它是一个开放源代码的关系数据库模型系统(RDBMS)。 Altibase的第一个版本称为Spiner，该版本于1999年发布。它是企业级的内存中混合型高性能RDBMS。它由Altibase Corporation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. Amazon SimpleDB：
它是Amazon托管的简单数据库服务，数据存储在Amazon Cloud中。它是Amazon是一项用于实时在结构化数据上运行查询的Web服务。该数据库由Amazon.com用Erlang编写。它具有以下功能–高可用性和灵活性，几乎没有管理负担。
Altibase和Amazon SimpleDB之间的区别：
| 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. |