1. 阿里云云数据库PolarDB：
它是一个与 MySQL、PostgreSQL 和 Oracle 兼容的云原生关系数据库。云数据库架构在单个集群中支持 5000 台物理机。它专为需要快速性能、高并发和自动扩展的业务关键型数据库应用程序而设计。
2.阿里云MaxCompute：
它以前称为 ODPS，是用于大规模数据仓库的通用、全托管、多租户数据处理平台。它用于存储和计算批量结构化数据。它提供了大量的数据仓库解决方案以及大数据分析和建模服务。阿里云PolarDB版与阿里云MaxCompute的区别：
| S.NO. | Alibaba Cloud ApsaraDB for PolarDB | Alibaba Cloud MaxCompute |
|---|---|---|
| 1. | It was developed by Alibaba in August 2013. | It was developed by Alibaba in 2016. |
| 2. | It is a cloud-native relational database compatible with MySQL, PostgreSQL, and Oracle. | It is a general purpose, fully managed, multi-tenancy data processing platform for large-scale data warehousing. |
| 3. | In Alibaba Cloud ApsaraDB for PolarDB there are hosted server operating systems. | In Alibaba Cloud MaxCompute there are hosted server operating systems. |
| 4. | The license of Alibaba Cloud ApsaraDB for PolarDB is commercial. | The license of Alibaba Cloud MaxCompute is also commercial. |
| 5. | It supports XML format. | It does not support XML format. |
| 6. | It supports the Server-side scripting. | It supports user defined functions based Server-side scripting. |
| 7. | There is only one partitioning method – Sharding. | It also support partitioning methods. |
| 8. | It supports SQL query language. | It supports SQL-like query language. |
| 9. | It supports replication methods. | It also supports replication methods. |
| 10. | ApsaraDB for PolarDB provides the concept of Referential Integrity. Hence, there are Foreign Keys. | MaxCompute does not provide the concept of Referential Integrity. Hence, no Foreign Keys. |
| 11. | It supports in-memory capabilities. | It does not support in-memory capabilities. |
| 12. | It does not offer any API for user-defined Map/Reduce methods. | It offers an API for user-defined Map/Reduce methods. |
| 13. | It supports ACID properties. | It does not support ACID properties. |
| 14. | Programming languages supported are Java and Python. | Programming language supported is Java. |