1.速度数据库：
它是 .NET 对象数据库，可以嵌入/分发并扩展到图形数据模型 (VelocityGraph) 数据库速度快且内存消耗低。它是一个性能极高、易于使用、可扩展、可嵌入和可分发的对象数据库系统。
2. 雅科莫：
它是一个基于 OpenCL 的内存数据库管理系统，用于实时分析和大数据解决方案，是作为即插即用解决方案开发的。它旨在通过并行计算有效地利用硬件。
VelocityDB 和 Yaacomo 的区别：
| S.NO. | VelocityDB | Yaacomo |
|---|---|---|
| 1 | It is developed by VelocityDB Inc and initially released on 2011 and Current release of VelocityDB is 7.x | It is developed by Q2WEB GmbH and initially released on 2009. |
| 2 | Its server operating systems of VelocityDB is Any that supports .NET | Its server operating systems of Yaacomo is Android, Linux, Windows. |
| 3 | Its primary database model is Graph DBMS and Object oriented DBMS | Its primary database model is Relational DBMS. |
| 4 | It supports .Net programming languages. | It does not support any programming languages |
| 5 | APIs and other access methods of VelocityDB is .Net | APIs and other access methods of Yaacomo is JDBC, ODBC. |
| 6 | Implementation language is C# . | It doesn’t has any Implementation language. |
| 7 | Absence of Replication methods | Replication methods of Yaacomo is Master-slave replication. |
| 8 | Sharding Partitioning method present in VelocityDB. | Horizontal Partitioning method in Yaacomo. |
| 9 | It doesn’t hold Foreign keys | It holds Foreign keys. |