1. VelocityDB :
It is .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph) Database is fast and low memory consuming. It is an extremely high performance, easy to use, scalable, embeddable, and distributable object database system.
2. Weaviate :
It is open-source GraphQL-based Smart Graph with the core features: semantic search, automatic classification, and knowledge representation. Primary database model is Search Engine and secondary database models are Graph DBMS. It allows our data to represent in a large graph format based on the GraphQL query language. Its search graph based on a graph embedding mechanism called the Contextionary.
Difference between VelocityDB and Weaviate :
|It is developed by VelocityDB Inc and initially released on 2011 .||It is developed by SeMI Technologies B.V. and initially released on 2017.|
|Server operating systems of VelocityDB is Any that supports .NET||No such server operating systems in Weaviate .|
|Its primary database model is Graph DBMS and Object oriented DBMS||Its primary database model is Search Engine.|
|Absence of Secondary database models in VelocityDB||Its secondary database models is Graph DBMS.|
|It supports .Net programming languages.||No such supported programming languages in Weaviate.|
|APIs and other access methods of VelocityDB is .Net||It supports GraphQL query language and RESTful HTTP/JSON API.|
|It has a Data Schema.||Data Schema of Weaviate is maps to GraphQL interface.|
|It has Implementation language-C# .||Implementation language of Weaviate is Go.|
|Its transaction concepts is ACID (Atomicity, Consistency, Isolation, and Durability).||Absence of transaction concepts in Weaviate.|
|Absence of Replication methods||There is replication methods.|
|It has immediate Consistency concept.||It has Eventual Consistency concept.|
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