1. Adabas：
Adabas代表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. Amazon Aurora：
Amazon Aurora是来自Amazon Web Services的完全托管的关系数据库引擎，与MySQL和PostgreSQL兼容。它比标准MySQL数据库快大约五倍，比标准PostgreSQL数据库快三倍。 Aurora的功能具有分布式容错和自愈存储系统。
Adabas和Amazon Aurora之间的区别：
| S.NO. | Adabas | AMAZON AURORA |
|---|---|---|
| 1. | It was developed by Software AG in 1971. | It was developed by Amazon in 2015. |
| 2. | It is OLTP – DBMS for mainframes and Linux/Unix/Windows environments. | It is MySQL and PostgreSQL compatible cloud service by Amazon |
| 3. | It is not available as cloud service | It is available as cloud service |
| 4. | Server operating systems for Adabas are BS2000, Linux, Unix, Windows, z/OS, and z/VSE. | In Amazon Aurora, Hosted server operating systems |
| 5. | It does not support XML Format. | It supports XML Format. |
| 6. | Server-side scripting is done in Natural. | It supports Server-side scripting. |
| 7. | It supports partitioning methods. | Partitioning can be done with horizontal partitioning. |
| 8. | It supports SQL query language with add-on product Adabas SQL Gateway. | It supports SQL query language. |
| 9. | It supports Replication with add-on product Event Replicator. | It supports only one replication method – Master-slave replication. |
| 10. | Adabas does not provide concept of Referential Integrity. Hence, no Foreign Keys. | It provides concept of Referential Integrity. Hence, Foreign Keys. |
| 11. | It does not support In-memory capabilities. | It supports In-memory capabilities |
| 12. | Its primary database model is Multivalue DBMS | Its Primary database model is Relational DBMS. |