1. 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大规模并行处理 (MPP) 数据仓库服务，并由阿里云进行了一些深度扩展。
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。它是亚马逊网络服务 (AWS) 的一部分。它于 2017 年 11 月 29 日宣布。它同时支持开源 Apache TinkerPop Gremlin 图遍历语言。它允许用户使用通过 AWS Key Management Service 创建的密钥加密数据库。
阿里云 AnalyticDB for PostgreSQL 和 Amazon Neptune 的区别：
| S.NO. | Alibaba Cloud AnalyticDB for PostgreSQL | Amazon Neptune |
|---|---|---|
| 1. | It is developed By Alibaba, Pivotal Software Inc. and PostgreSQL Global Development Group on 2016. | It is developed By Amazon on 2017. |
| 2. | It is real-time data warehousing service that can process petabytes of data with high concurrency and low latency. | It is fast, reliable graph database built for the cloud product by Amazon.com |
| 3. | Its license of Alibaba Cloud AnalyticDB for PostgreSQL is commercial. | Its license of Amazon Neptune is commercial. |
| 4. | Its hosted server operating systems. | Its hosted server operating systems |
| 5. | Its primary database model is Relational DBMS. | Its Primary database model are Graph DBMS and RDF store. |
| 6. | It support the Server-side scripting. | 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. | It does not support SQL query language. |
| 9. | It supports replication methods. | It supports multi-availability zones high availability. |
| 10. | It provides concept of Referential Integrity. Hence, there is Foreign Keys. | It provides concept of Referential Integrity. Hence, there is Foreign Keys. |
| 11. | It does not offer API for user-defined Map/Reduce methods. | It does not offer API for user-defined Map/Reduce methods. |
| 12. | Programming languages supported are C, Java, Perl, R and Python. | Programming languages supported are C#, Go, Java, JavaScript, PHP, Python, Ruby and Scala. |