Difference between UniData,UniVerse and VelocityDB

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. VelocityDB :
It is a .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph) Database is fast and low memory consuming. VelocityDB is an extremely high performance, easy to use, scalable, embeddable and distributable object database system.

Difference between UniData, UniVerse and VelocityDB :

S.NO.	UniData, UniVerse	VelocityDB
1	Developed by Rocket Software and initially released on 1985.	Developed by VelocityDB Inc and initially released on 2011 Current release of VelocityDB is 7.x.
2	Server operating systems of UniData, UniVerse is AIX, HP-UX, Linux, Solaris, Windows.	.NET is the Server operating system.
3	Primary database model is Multivalue DBMS.	Primary database model is Graph DBMS and Object oriented DBMS.
4	UniData, UniVerse supports .Net, Basic, C, Java, programming languages.	Supports .Net 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.	APIs and other access methods of VelocityDB is .Net
6	UniData, UniVerse has a schema-free Data Schema.	It also has a Data Schema.
7	It has Implementation language C .	It has Implementation language-C#
8	ACID (atomicity, consistency, isolation, durability) Transaction concepts in UniData, UniVerse.	Transaction concepts of VelocityDB is ACID ( Atomicity, Consistency, Isolation, and Durability).
9	Replication methods of UniData, UniVerse is Master-slave replication.	Absence of Replication methods.
10	UniData, UniVerse doesn’t hold Consistency concept.	VelocityDB has Immediate Consistency concept.
11	Absence of Partitioning methods in UniData, UniVerse.	Sharding is a Partitioning methods of VelocityDB.