1. UniData，UniVerse：
它是具有SQL映射层和元数据库功能的MultiValue数据库和应用程序服务器。 UniData简化了数据库设计，消除了SQL规范化的约束。 UniVerse是MultiValue应用程序平台的组件，其优点是用于开发企业应用程序的快速，灵活的数据服务器。基于UniVerse的应用程序可最大化可用资源的处理吞吐量，动态分配可用资源。
2. VoltDB：
它是分布式内存中NewSQL RDBMS和使用无共享体系结构的ACID兼容RDBMS。该数据库由Michael Stonebraker，Sam Madden和Daniel Abadi设计。最初，VoltDB数据库包括群集吞吐量和延迟以及CPU和内存使用情况的图表。 VoltDB基于H-Store，并随着多核服务器上每CPU核心数的增加而扩展
UniData，UniVerse和VoltDB之间的区别：
| S.NO. | UniData, UniVerse | VoltDB |
|---|---|---|
| 1 | Developed by Rocket Software and initially released on 1985. | Developed by VoltDB Inc. and initially released on 2010 and Current release on April 2019. |
| 2 | Server operating systems of UniData, UniVerse is AIX, HP-UX, Linux, Solaris, Windows. | Linux, OS X are the Server operating system. |
| 3 | Primary database model is Multivalue DBMS. | Primary database model is Relational DBMS. |
| 4 | UniData, UniVerse supports .Net, Basic, C, Java, programming languages. | Supports C#, C++, Erlang, Go, Java, JavaScript, PHP, Python programming languages. |
| 5 | APIs and other access methods of UniData, UniVerse is Proprietary protocol, RESTful HTTP API, Java API, JDBC, ODBC, OLE DB, SOAP-based API. | VoltDB supports JDBC, Java API, RESTful HTTP/JSON API. |
| 6 | Yes, UniData, UniVerse has a schema-free Data Schema. | Yes, VoltDB has a Data Schema. |
| 7 | It has Implementation language C . | Implementation language of VoltDB is Java, C++. |
| 8 | ACID (atomicity, consistency, isolation, durability) Transaction concepts in UniData, UniVerse. | Transaction concepts of VoltDB is ACID ( Atomicity, Consistency, Isolation, and Durability). |
| 9 | Replication methods of UniData, UniVerse is Master-slave replication | Replication methods of VoltDB is Master-master replication and Master-slave replication. |
| 10 | UniData, UniVerse doesn’t hold Consistency concept. | It doesn’t holds Consistency concept. |
| 11 | Absence of Partitioning methods in UniData, UniVerse. | It doesn’t holds sharding partitioning methods. |