1. UniData，UniVerse：
它是一个具有 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 应用平台的一个组件，它的优势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 的应用程序最大化可用资源的处理吞吐量，动态分配可用资源。
2. YugabyteDB：
它是开源的、云原生的、高性能的分布式 SQL 数据库全球分布式文档存储。它旨在使应用程序变得敏捷。 Yugabyte 总部位于加利福尼亚州桑尼维尔。 YugabyteDB 作为 Apache 2.0 开源项目进行分发和开发。
UniData、UniVerse 和 YugabyteDB 的区别：
| S.NO. | UniData, UniVerse | YugabyteDB |
|---|---|---|
| 1 | Developed by Rocket Software and initially released on 1985. | Developed by Yugabyte Inc. and initially released on 2017 and current release on March 2020. |
| 2 | Server operating systems of UniData, UniVerse is AIX, HP-UX, Linux, Solaris, Windows. | Server operating systems of YugabyteDB is Linux, OS X. |
| 3 | Its primary database model is Multivalue DBMS. | Its primary database model is Relational DBMS. |
| 4 | Absence of Secondary database models in UniData, UniVerse | Secondary database models of YugabyteDB is Document store and Wide column store |
| 5 | UniData, UniVerse supports .Net, Basic, C, Java, programming languages. | YugabyteDB supports C, C#, C++, Go, Java, JavaScript (Node.js), Python, Ruby programming languages. |
| 6 | APIs and other access methods of UniData, UniVerse is Java API, JDBC, ODBC, OLE DB, Proprietary protocol, RESTful HTTP API, SOAP-based API. | YugabyteDB supports YCQL, an SQL-based flexible-schema API with its roots in Cassandra Query Language. |
| 7 | Yes, UniData, UniVerse has a schema-free Data Schema. | Data scheme of YugabyteDB is depending on used data model. |
| 8 | It has Implementation language C . | Implementation language of YugabyteDB is C and C++. |
| 9 | ACID (atomicity, consistency, isolation, durability) Transaction concepts in UniData, UniVerse. | Its Transaction concepts is Distributed ACID with Serializable Snapshot Isolation. Inspired by Google Spanner architecture. |
| 10 | Replication methods of UniData, UniVerse Master-slave replication. | Replication methods of YugabyteDB is based on Raft distributed consensus protocol, minimum 3 replicas for continuous availability. |
| 11 | UniData, UniVerse doesn’t hold Consistency concept. | YugabyteDB has strong consistency on writes and tunable consistency on reads. |