1. 雅科莫：
Yaacomo 是一个基于 OpenCL 的关系型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。 Yaacomo 旨在通过并行计算有效利用硬件。
2. 大师：
Virtuoso 是一种中间件，支持管理表示为关系表和/或属性图的数据。它是一个多模型混合 RDBMS，其中包含主要数据库模型，如图形 DBMS、本机 XML DBMS、关系 DBMS、RDF 存储、搜索引擎。它旨在利用操作系统线程支持和多个 CPU。 Virtuoso 对象关系数据库 (ORDBMS) 支持实体完整性和参照完整性。
Virtuoso 和 Yaacomo 的区别：
| S.No. | Virtuoso | Yaacomo |
|---|---|---|
| 1. | It is developed by Virtuoso and initially released on 1998 and current release on May 2019. | It is developed by Q2WEB GmbH and initially released on 2009. |
| 2. | Its primary database model is Graph DBMS, Native XML DBMS, Relational DBMS, RDF store, Search engine. | Its primary database model is Relational DBMS. |
| 3. | Its secondary database models is Document store. | No secondary database model. |
| 4. | Server operating systems of AIX, FreeBSD, HP-UX, Linux, OS X, Solaris, Windows. | Server operating systems of Yaacomo is Android, Linux, Windows. |
| 5. | Implementation language of Virtuoso is C. | There is no implemented language present in Yaacomo. |
| 6. | Virtuoso supports ADO.NET, GeoSPARQL, HTTP API, JDBC, Jena, RDF API, ODBC, OLE DB, RDF4J API, RESTful HTTP API, Sesame REST HTTP Protocol, SOAP, webservices, WebDAV, XPath, XQuery, XSLT. | APIs and other access methods of Yaacomo is JDBC, ODBC. |
| 7. | Virtuoso supports .Net, C, C#, C++, Java, JavaScript, Perl, PHP, Python, Ruby, Visual Basic programming languages. | No supporting programming languages. |
| 8. | It has Immediate Consistency concept. | It has Immediate Consistency concept. |
| 9. | Its Transaction concepts is ACID (Atomicity, Consistency, Isolation, and Durability). | Its transaction concept is ACID (Atomicity, Consistency, Isolation, and Durability). |
| 10. | Server-side scripts and Typing present in Virtuoso. | Absence of server-side scripts and presence of typing in Yaacomo. |
| 11. | Replication methods of Virtuoso is based on Chain, star, and bi-directional replication, Master-master replication, Master-slave replication. | Replication methods of Yaacomo is Master-slave replication. |