Difference between UniData,UniVerse and Virtuoso

1. UniData, UniVerse :
It is a MultiValue database and application server with SQL mapping layer and meta database capabilities. UniData makes for easier database design, eliminating the constraints of SQL normalization. UniVerse is a component of the MultiValue application platform, Its advantages is fast, flexible data server for developing enterprise apps. UniVerse-based applications maximizing processing throughput of available resources, dynamically allocate available resources.

2. Virtuoso :
It is a middleware that supports management of data represented as relational tables and/or property graphs. It is a multi-model hybrid-RDBMS which holds primary database model as Graph DBMS, Native XML DBMS, Relational DBMS, RDF store, Search engine. It is designed for taking advantages of operating system threading support and multiple CPUs. Virtuoso Object-relational database (ORDBMS) supports entity integrity and referential integrity.

Difference between UniData, UniVerse and Virtuoso :

S.NO.	UniData, UniVerse	Virtuoso
1	Developed by Rocket Software and initially released on 1985.	Developed by Virtuoso and initially released on 1998 and current release on May 2019.
2	Server operating systems of UniData, UniVerse is AIX, HP-UX, Linux, Solaris, Windows.	AIX, FreeBSD, HP-UX, Linux, OS X, Solaris, Windows are the Server operating system.
3	Primary database model is Multivalue DBMS.	Primary database model is Graph DBMS, Native XML DBMS, Relational DBMS, RDF store, Search engine and Secondary database models is Document store.
4	UniData, UniVerse supports .Net, Basic, C, Java, programming languages.	Supports .Net, C, C#, C++, Java, JavaScript, Perl, PHP, Python, Ruby, Visual Basic 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.	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.
6	UniData, UniVerse has a schema-free Data Schema.	It also has a Data Schema.
7	It has Implementation language C .	Implementation language of Virtuoso is  C.
8	ACID (atomicity, consistency, isolation, durability) Transaction concepts in UniData, UniVerse.	Its transaction concept is ACID ( Atomicity, Consistency, Isolation, and Durability).
9	Replication methods of UniData, UniVerse is Master-slave replication	Replication methods of Virtuoso is based on Chain, star, and bi-directional replication, Master-master replication, Master-slave replication.
10	UniData, UniVerse doesn’t hold Consistency concept.	It also has Consistency concept.
11	Absence of Partitioning methods in UniData, UniVerse.	It doesn’t holds sharding partitioning methods.
12	It does not holds Foreign keys.	It holds Foreign keys.