1.活动枢轴：
ActivePivot 是一种内存 DBMS，结合了事务处理和分析处理来处理不断变化的数据的聚合。该数据库使用列式存储架构以及字典压缩和Java对象的二进制表示。它是法国公司 ActiveViam 的核心产品之一——曾被称为 Quartet FS，成立于 2005 年。
2. 亚马逊简单数据库：
它是 Amazon 托管的简单数据库服务，数据存储在 Amazon Cloud 中。它是 Amazon 的网络服务，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。
ActivePivot 和 Amazon SimpleDB 之间的区别：
| S.No. | ActivePivot | Amazon SimpleDB |
|---|---|---|
| 1. | It was developed by ActiveViam. | It was developed by Amazon in 2007. |
| 2. | It is an in-memory DBMS combining transnational and analytical processing to handle aggregation of ever-changing data. | It is hosted simple database service by Amazon, with data stored in Amazon Cloud. |
| 3. | It does not support any replication method. | It supports replication methods. |
| 4. | It is not available as cloud service. | It is available as cloud service. |
| 5. | Its primary database model is Object-oriented DBMS. | Its primary database model is Key-value store. |
| 6. | It supports Server-side scripting with Post-processors in Java. | It does not support Server-side scripting. |
| 7. | In ActivePivot, partitioning can be done by Sharding and horizontal partitioning. | It does not support partitioning methods. |
| 8. | It supports SQL query language with Multidimensional Expressions (MDX). | It does not support SQL query language. |