1. Adabas：
Adabas代表了一个适应性强的数据库系统。它是由Software AG开发的，可以在IBM大型机上运行。它于1971年推出。它是OLTP –适用于大型机和Linux / Unix / Windows环境的DBMS。它是一种企业数据库管理系统，旨在实现可靠性，高性能，可伸缩性和较低的总拥有成本。
2.亚马逊海王星：
Amazon Neptune是Amazon.com为云产品构建的快速，可靠的图形数据库。它是AWS(Amazon Web Services)的一部分。它于2017年11月29日宣布。它同时支持开源Apache TinkerPop Gremlin图形遍历语言。它允许用户使用通过AWS Key Management Service创建的密钥来加密数据库。
Adabas和Amazon Neptune之间的区别：
| 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. |