1. 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。它是作为 Apache 2.0 开源项目分发和开发的。
2.瓦伦蒂娜服务器：
它是一个对象关系数据库和报告服务器和快速对象关系数据库服务器。它包括集成数据库服务器、Valentina 数据库服务器和 SQLite 数据库服务器。它是一个功能齐全、符合标准的多用户访问基于 SQLite 的数据库服务器。
Valentina Server 和 YugabyteDB 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. |