1.阿达巴斯：
Adabas 代表适应性数据库系统。它由 Software AG 开发，可在 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。它是专为可靠性、高性能、可扩展性和低总体拥有成本而设计的企业数据库管理系统。
2.亚马逊极光：
Amazon Aurora 是 Amazon Web Services 的完全托管关系数据库引擎，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 的特点是具有分布式容错和自愈存储系统。
Adabas 和 Amazon Aurora 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. |