Difference between Adabas and Amazon Neptune

1. Adabas :
The Adabas stands for an adaptable database system. It was developed by Software AG to run on IBM mainframes. It was launched in 1971. It is an OLTP – DBMS for mainframes and Linux/Unix/Windows environments. It is an enterprise database management system designed for reliability, high performance, scalability and low total cost of ownership.

2. Amazon Neptune :
Amazon Neptune is a fast, reliable graph database built for the cloud product by Amazon.com. It is part of AWS (Amazon Web Services). It was announced on November 29, 2017. It supports both the open-source Apache TinkerPop Gremlin graph traversal language. It allows the user to encrypt databases using keys created through AWS Key Management Service.

Difference between Adabas and Amazon Neptune :

S.NO.	Adabas	Amazon Neptune
1.	Developed By Software AG on 1971	Developed By Amazon on 2017.
2.	It is an OLTP – DBMS for mainframes and Linux/Unix/Windows environments	It is a fast, reliable graph database built for the cloud product by Amazon.com
3.	The License of Adabas is commercial	The License of Amazon Neptune is commercial.
4.	Server operating systems for Adabas are BS2000, Linux, Unix, Windows, z/OS and z/VSE.	In Amazon Neptune, Hosted server operating systems
5.	Its primary database model is Multivalue DBMS.	Its Primary database model are Graph DBMS and RDF store.
6.	Server-side scripting is done in Natural.	It does not support the Server-side scripting.
7.	It supports partitioning methods.	It does not support partitioning methods.
8.	It supports SQL query language with add-on product Adabas SQL Gateway.	It does not supports SQL query language.
9.	It supports Replication with add-on product Event Replicator.	It support multi-availability zones high availability.
10.	It does not provides the concept of Referential Integrity. Hence, no Foreign Keys.	It provides the concept of Referential Integrity. Hence, there is Foreign Keys.
11.	It is not available as a cloud service	It is available as a cloud service
12.	Programming languages supported is Natural	Programming languages supported are C#, Go, Java, JavaScript, PHP, Python, Ruby and Scala.