Difference between VelocityDB and YugabyteDB

1. YugabyteDB :
It is the open source, cloud native and high-performance distributed SQL database globally-distributed document store. YugabyteDB aims to make applications agile. Yugabyte is headquartered in Sunnyvale, CA. YugabyteDB is distributed and developed as an Apache 2.0 open source project .

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 VelocityDB and YugabyteDB :

S.NO.	VelocityDB	YugabyteDB
1	Developed by VelocityDB Inc and initially released on 2011 .	Developed by Yugabyte Inc. and initially released on 2017 and current release on March 2020.
2	Current release of VelocityDB is 7.x	Current release date- March 2020
3	Server operating systems of VelocityDB  is Any that supports .NET	Server operating systems of YugabyteDB is Linux, OS X.
4	Its primary database model is Graph DBMS and Object oriented DBMS	Its primary database model is Relational DBMS.
5	Absence of Secondary database models in VelocityDB	Secondary database models of YugabyteDB is Document store and Wide column store
6	VelocityDB  supports .Net programming languages.	YugabyteDB supports C, C#, C++, Go, Java, JavaScript (Node.js), Python, Ruby programming languages.
7	APIs and other access methods of VelocityDB is .Net	YugabyteDB  supports YCQL, an SQL-based flexible-schema API with its roots in Cassandra Query Language.
8	Yes, VelocityDB has a Data Schema.	Data scheme of YugabyteDB  is depending on used data model.
9	It has Implementation language-C# .	Implementation language of YugabyteDB is  C and C++.
10	VelocityDB- Transaction concepts is ACID ( Atomicity, Consistency, Isolation, and Durability).	Its Transaction concepts is Distributed ACID with Serializable & Snapshot Isolation. Inspired by Google Spanner architecture.
11	Absence of Replication methods	Replication methods of YugabyteDB  is based on Raft distributed consensus protocol, minimum 3 replicas for continuous availability.
12	VelocityDB has Immediate Consistency concept.	YugabyteDB has strong consistency on writes and tunable consistency on reads.
13	Sharding is a Partitioning methods of VelocityDB.	Hash and Range Sharding is a Partitioning methods of YugabyteDB.
14	It does not holds Foreign keys	It holds Foreign keys