1.阿达巴斯：
Adabas 代表自适应数据库系统。它是由 Software AG 开发的，可以在 IBM 大型机上运行。它于 1971 年推出。它是一个用于大型机和 Linux/Unix/Windows 环境的 OLTP-DBMS。 Adabas 是一个企业数据库管理系统 (DBMS)，专为可靠性、高性能、可扩展性和低总体拥有成本而设计。
2. 阿里云 AnalyticDB for PostgreSQL ：
AnalyticDB是阿里云上的在线分析处理数据库系统。它提供 PostgreSQL 和 MySQL 版本。 AnalyticDB for PostgreSQL 是基于 Greenplum 开源数据库程序的在线 MPP(大规模并行处理)数据仓库服务，并通过阿里云进行了一些深度扩展。 Adabas 和阿里云 AnalyticDB for PostgreSQL 的区别：
| S.NO. | ADABAS | Alibaba Cloud AnalyticDB for PostgreSQL |
|---|---|---|
| 1. | It was developed by Software AG in 1971. | It was developed by Alibaba, Pivotal Software Inc. and PostgreSQL Global Development Group in 2016. |
| 2. | It is an OLTP-DBMS for mainframes and Linux/Unix/Windows environments. | It is an online MPP (Massively Parallel Processing) data warehousing service based on Greenplum. |
| 3. | It does not support in-memory capabilities. | It also does not support In-memory capabilities. |
| 4. | Server operating systems for Adabas are BS2000, Linux, Unix, Windows, z/OS and z/VSE. | In Alibaba Cloud AnalyticDB for PostgreSQL, there are Hosted server operating systems. |
| 5. | It does not support XML Format. | It supports XML Format. |
| 6. | Server-side scripting is done in Natural language. | It also supports the Server-side scripting. |
| 7. | It supports partitioning methods. | Supported partitioning method is Sharding. |
| 8. | It supports SQL query language with add-on product Adabas SQL Gateway. | It also supports SQL query language. |
| 9. | It supports replication with add-on product Event Replicator. | It also supports replication methods. |
| 10. | Adabas does not provide the concept of Referential Integrity. Hence, no Foreign Keys. | AnalyticDB for PostgreSQL provides the concept of Referential Integrity. Hence, there are Foreign Keys. |
| 11. | The license of Adabas is commercial. | The license of Alibaba Cloud AnalyticDB for PostgreSQL is also commercial. |
| 12. | The primary database model is Multivalue DBMS. | The primary database model is Relational DBMS. |
| 13. | It does not offer any API for user-defined Map/Reduce methods. | It also does not offer any API for user-defined Map/Reduce methods. |