1. YugabyteDB：
它是开源，云原生和高性能的分布式SQL数据库全局分布的文档存储。它旨在使应用程序变得敏捷。 Yugabyte总部位于加利福尼亚州森尼韦尔。它作为Apache 2.0开源项目进行分发和开发。
2. Valentina服务器：
它是一个对象关系数据库和报表服务器以及快速的对象关系数据库服务器。它包括集成的数据库服务器，Valentina数据库服务器和SQLite数据库服务器。它是功能齐全，符合标准的多用户访问基于SQLite的数据库服务器。
Valentina Server和YugabyteDB之间的区别：
| Valentina Server | YugabyteDB |
|---|---|
| It is developed by Paradigma Software and initially released on 1994. | It is developed by Yugabyte Inc. and initially released on 2017 and current release on March 2020. |
| Its server operating systems of Valentina Server is Linux, OS X, Windows. | Its server operating systems of YugabyteDB is Linux, OS X. |
| Its primary database model is Relational DBMS. | Its primary database model is Relational DBMS. |
| Absence of Secondary database models in Valentina Server | Secondary database models of YugabyteDB is Document store and Wide column store |
| It supports .Net, C, C#, C++, Objective-C, PHP, Ruby, Visual Basic, Visual Basic.NET, programming languages. | It supports C, C#, C++, Go, Java, JavaScript (Node.js), Python, Ruby programming languages. |
| APIs and other access methods of Valentina Server is ODBC. | It supports YCQL, an SQL-based flexible-schema API with its roots in Cassandra Query Language. |
| It has Data Schema. | Data scheme of YugabyteDB is depending on used data model. |
| It doesn’t has Implementation language-C# . | Implementation language of YugabyteDB is C and C++. |
| Absence of Transaction concepts in Valentina Server. | Its Transaction concepts is Distributed ACID with Serializable & Snapshot Isolation. Inspired by Google Spanner architecture. |
| Absence of Replication methods. | Replication methods of YugabyteDB is based on Raft distributed consensus protocol, minimum 3 replicas for continuous availability. |
| It doesn’t hold Consistency concept. | It has strong consistency on writes and tunable consistency on reads. |